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• http://www.saber.ula.ve/handle/123456789/21001
• http://www.saber.ula.ve/handle/123456789/21002
• http://www.saber.ula.ve/handle/123456789/21003
• http://www.saber.ula.ve/handle/123456789/21004
• http://www.saber.ula.ve/handle/123456789/21005
• http://www.saber.ula.ve/handle/123456789/21006
• http://www.saber.ula.ve/handle/123456789/21007
• http://www.saber.ula.ve/handle/123456789/21008
• http://www.saber.ula.ve/handle/123456789/21009
• http://www.saber.ula.ve/handle/123456789/21010
• http://www.saber.ula.ve/handle/123456789/21011
• http://www.saber.ula.ve/handle/123456789/21012
• http://www.saber.ula.ve/handle/123456789/21013
• http://www.saber.ula.ve/handle/123456789/21014
• http://www.saber.ula.ve/handle/123456789/21015
• http://www.saber.ula.ve/handle/123456789/21016
• http://www.saber.ula.ve/handle/123456789/21017
• http://www.saber.ula.ve/handle/123456789/21018
• http://www.saber.ula.ve/handle/123456789/21019
• http://www.saber.ula.ve/handle/123456789/21020
• http://www.saber.ula.ve/handle/123456789/21021
• http://www.saber.ula.ve/handle/123456789/21022
• http://www.saber.ula.ve/handle/123456789/21023
• http://www.saber.ula.ve/handle/123456789/21024
• http://www.saber.ula.ve/handle/123456789/21025
• http://www.saber.ula.ve/handle/123456789/21026
• http://www.saber.ula.ve/handle/123456789/21027
• http://www.saber.ula.ve/handle/123456789/21028
• http://www.saber.ula.ve/handle/123456789/21029
• http://www.saber.ula.ve/handle/123456789/21030
• http://www.saber.ula.ve/handle/123456789/21031
• http://www.saber.ula.ve/handle/123456789/21032
• http://www.saber.ula.ve/handle/123456789/21033
• http://www.saber.ula.ve/handle/123456789/21034
• http://www.saber.ula.ve/handle/123456789/21035
• http://www.saber.ula.ve/handle/123456789/21036
• http://www.saber.ula.ve/handle/123456789/21037
• http://www.saber.ula.ve/handle/123456789/21038
• http://www.saber.ula.ve/handle/123456789/21039
• http://www.saber.ula.ve/handle/123456789/21040
• http://www.saber.ula.ve/handle/123456789/21041
• http://www.saber.ula.ve/handle/123456789/21042
• http://www.saber.ula.ve/handle/123456789/21043
• http://www.saber.ula.ve/handle/123456789/21044
• http://www.saber.ula.ve/handle/123456789/21045
• http://www.saber.ula.ve/handle/123456789/21046
• http://www.saber.ula.ve/handle/123456789/21047
• http://www.saber.ula.ve/handle/123456789/21048
• http://www.saber.ula.ve/handle/123456789/21049
• http://www.saber.ula.ve/handle/123456789/21050
• http://www.saber.ula.ve/handle/123456789/21051
• http://www.saber.ula.ve/handle/123456789/21052
• http://www.saber.ula.ve/handle/123456789/21053
• http://www.saber.ula.ve/handle/123456789/21054
• http://www.saber.ula.ve/handle/123456789/21055
• http://www.saber.ula.ve/handle/123456789/21056
• http://www.saber.ula.ve/handle/123456789/21057
• http://www.saber.ula.ve/handle/123456789/21058
• http://www.saber.ula.ve/handle/123456789/21059
• http://www.saber.ula.ve/handle/123456789/21060
• http://www.saber.ula.ve/handle/123456789/21061
• http://www.saber.ula.ve/handle/123456789/21062
• http://www.saber.ula.ve/handle/123456789/21063
• http://www.saber.ula.ve/handle/123456789/21064
• http://www.saber.ula.ve/handle/123456789/21065
• http://www.saber.ula.ve/handle/123456789/21066
• http://www.saber.ula.ve/handle/123456789/21067
• http://www.saber.ula.ve/handle/123456789/21068
• http://www.saber.ula.ve/handle/123456789/21069
• http://www.saber.ula.ve/handle/123456789/21070
• http://www.saber.ula.ve/handle/123456789/21071
• http://www.saber.ula.ve/handle/123456789/21072
• http://www.saber.ula.ve/handle/123456789/21073
• http://www.saber.ula.ve/handle/123456789/21074
• http://www.saber.ula.ve/handle/123456789/21075
• http://www.saber.ula.ve/handle/123456789/21076
• http://www.saber.ula.ve/handle/123456789/21077
• http://www.saber.ula.ve/handle/123456789/21078
• http://www.saber.ula.ve/handle/123456789/21079
• http://www.saber.ula.ve/handle/123456789/21080
• http://www.saber.ula.ve/handle/123456789/21081
• http://www.saber.ula.ve/handle/123456789/21082
• http://www.saber.ula.ve/handle/123456789/21083
• http://www.saber.ula.ve/handle/123456789/21084
• http://www.saber.ula.ve/handle/123456789/21085
• http://www.saber.ula.ve/handle/123456789/21086
• http://www.saber.ula.ve/handle/123456789/21087
• http://www.saber.ula.ve/handle/123456789/21088
• http://www.saber.ula.ve/handle/123456789/21089
• http://www.saber.ula.ve/handle/123456789/21090
• http://www.saber.ula.ve/handle/123456789/21091
• http://www.saber.ula.ve/handle/123456789/21092
• http://www.saber.ula.ve/handle/123456789/21093
• http://www.saber.ula.ve/handle/123456789/21094
• http://www.saber.ula.ve/handle/123456789/21095
• http://www.saber.ula.ve/handle/123456789/21096
• http://www.saber.ula.ve/handle/123456789/21097
• http://www.saber.ula.ve/handle/123456789/21098
• http://www.saber.ula.ve/handle/123456789/21099
• http://www.saber.ula.ve/handle/123456789/21100
• http://www.saber.ula.ve/handle/123456789/21101
• http://www.saber.ula.ve/handle/123456789/21102
• http://www.saber.ula.ve/handle/123456789/21103
• http://www.saber.ula.ve/handle/123456789/21104
• http://www.saber.ula.ve/handle/123456789/21105
• http://www.saber.ula.ve/handle/123456789/21106
• http://www.saber.ula.ve/handle/123456789/9402
• http://www.saber.ula.ve/handle/123456789/9403
• http://www.saber.ula.ve/handle/123456789/21107
• http://www.saber.ula.ve/handle/123456789/21108
• http://www.saber.ula.ve/handle/123456789/21109
• http://www.saber.ula.ve/handle/123456789/21110
• http://www.saber.ula.ve/handle/123456789/21111
• http://www.saber.ula.ve/handle/123456789/21112
• http://www.saber.ula.ve/handle/123456789/21113
• http://www.saber.ula.ve/handle/123456789/21114
• http://www.saber.ula.ve/handle/123456789/21115
• http://www.saber.ula.ve/handle/123456789/21116
• http://www.saber.ula.ve/handle/123456789/21117
• http://www.saber.ula.ve/handle/123456789/21118
• http://www.saber.ula.ve/handle/123456789/21119
• http://www.saber.ula.ve/handle/123456789/21120
• http://www.saber.ula.ve/handle/123456789/21121
• http://www.saber.ula.ve/handle/123456789/21122
• http://www.saber.ula.ve/handle/123456789/21123
• http://www.saber.ula.ve/handle/123456789/21124
• http://www.saber.ula.ve/handle/123456789/21125
• http://www.saber.ula.ve/handle/123456789/21126
• http://www.saber.ula.ve/handle/123456789/21127
• http://www.saber.ula.ve/handle/123456789/21128
• http://www.saber.ula.ve/handle/123456789/21129
• http://www.saber.ula.ve/handle/123456789/21130
• http://www.saber.ula.ve/handle/123456789/21131
• http://www.saber.ula.ve/handle/123456789/21132
• http://www.saber.ula.ve/handle/123456789/15362
• http://www.saber.ula.ve/handle/123456789/21133
• http://www.saber.ula.ve/handle/123456789/21134
• http://www.saber.ula.ve/handle/123456789/21135
• http://www.saber.ula.ve/handle/123456789/21136
• http://www.saber.ula.ve/handle/123456789/21137
• http://www.saber.ula.ve/handle/123456789/21138
• http://www.saber.ula.ve/handle/123456789/21139
• http://www.saber.ula.ve/handle/123456789/21140
• http://www.saber.ula.ve/handle/123456789/21141
• http://www.saber.ula.ve/handle/123456789/21142
• http://www.saber.ula.ve/handle/123456789/21143
• http://www.saber.ula.ve/handle/123456789/21144
• http://www.saber.ula.ve/handle/123456789/21145
• http://www.saber.ula.ve/handle/123456789/21146
• http://www.saber.ula.ve/handle/123456789/21147
• http://www.saber.ula.ve/handle/123456789/21148
• http://www.saber.ula.ve/handle/123456789/21149
• http://www.saber.ula.ve/handle/123456789/21150
• http://www.saber.ula.ve/handle/123456789/21151
• http://www.saber.ula.ve/handle/123456789/21152
• http://www.saber.ula.ve/handle/123456789/21153
• http://www.saber.ula.ve/handle/123456789/21154
• http://www.saber.ula.ve/handle/123456789/21155
• http://www.saber.ula.ve/handle/123456789/21156
• http://www.saber.ula.ve/handle/123456789/21157
• http://www.saber.ula.ve/handle/123456789/21158
• http://www.saber.ula.ve/handle/123456789/21159
• http://www.saber.ula.ve/handle/123456789/21160
• http://www.saber.ula.ve/handle/123456789/21161
• http://www.saber.ula.ve/handle/123456789/21162
• http://www.saber.ula.ve/handle/123456789/21163
• http://www.saber.ula.ve/handle/123456789/21164
• http://www.saber.ula.ve/handle/123456789/21165
• http://www.saber.ula.ve/handle/123456789/21166
• http://www.saber.ula.ve/handle/123456789/21167
• http://www.saber.ula.ve/handle/123456789/21168
• http://www.saber.ula.ve/handle/123456789/21169
• http://www.saber.ula.ve/handle/123456789/21170
• http://www.saber.ula.ve/handle/123456789/21171
• http://www.saber.ula.ve/handle/123456789/21172
• http://www.saber.ula.ve/handle/123456789/21173
• http://www.saber.ula.ve/handle/123456789/21174
• http://www.saber.ula.ve/handle/123456789/21175
• http://www.saber.ula.ve/handle/123456789/21176
• http://www.saber.ula.ve/handle/123456789/21177
• http://www.saber.ula.ve/handle/123456789/21178
• http://www.saber.ula.ve/handle/123456789/21179
• http://www.saber.ula.ve/handle/123456789/21180
• http://www.saber.ula.ve/handle/123456789/21181
• http://www.saber.ula.ve/handle/123456789/21182
• http://www.saber.ula.ve/handle/123456789/21183
• http://www.saber.ula.ve/handle/123456789/21184
• http://www.saber.ula.ve/handle/123456789/21185
• http://www.saber.ula.ve/handle/123456789/21186
• http://www.saber.ula.ve/handle/123456789/21187
• http://www.saber.ula.ve/handle/123456789/21188
• http://www.saber.ula.ve/handle/123456789/21189
• http://www.saber.ula.ve/handle/123456789/21190
• http://www.saber.ula.ve/handle/123456789/21191
• http://www.saber.ula.ve/handle/123456789/21192
• http://www.saber.ula.ve/handle/123456789/21193
• http://www.saber.ula.ve/handle/123456789/21194
• http://www.saber.ula.ve/handle/123456789/21195
• http://www.saber.ula.ve/handle/123456789/21196
• http://www.saber.ula.ve/handle/123456789/21197
• http://www.saber.ula.ve/handle/123456789/21198
• http://www.saber.ula.ve/handle/123456789/21199
• http://www.saber.ula.ve/handle/123456789/21200
• http://www.saber.ula.ve/handle/123456789/21201
• http://www.saber.ula.ve/handle/123456789/21202
• http://www.saber.ula.ve/handle/123456789/21203
• http://www.saber.ula.ve/handle/123456789/21204
• http://www.saber.ula.ve/handle/123456789/21205
• http://www.saber.ula.ve/handle/123456789/21206
• http://www.saber.ula.ve/handle/123456789/21207
• http://www.saber.ula.ve/handle/123456789/21208
• http://www.saber.ula.ve/handle/123456789/21209
• http://www.saber.ula.ve/handle/123456789/21210
• http://www.saber.ula.ve/handle/123456789/21211
• http://www.saber.ula.ve/handle/123456789/21212
• http://www.saber.ula.ve/handle/123456789/21213
• http://www.saber.ula.ve/handle/123456789/21214
• http://www.saber.ula.ve/handle/123456789/21215
• http://www.saber.ula.ve/handle/123456789/21216
• http://www.saber.ula.ve/handle/123456789/21217
• http://www.saber.ula.ve/handle/123456789/21218
• http://www.saber.ula.ve/handle/123456789/21219
• http://www.saber.ula.ve/handle/123456789/21220
• http://www.saber.ula.ve/handle/123456789/21221
• http://www.saber.ula.ve/handle/123456789/21222
• http://www.saber.ula.ve/handle/123456789/21223
• http://www.saber.ula.ve/handle/123456789/21224
• http://www.saber.ula.ve/handle/123456789/21225
• http://www.saber.ula.ve/handle/123456789/21226
• http://www.saber.ula.ve/handle/123456789/21227
• http://www.saber.ula.ve/handle/123456789/21228
• http://www.saber.ula.ve/handle/123456789/21229
• http://www.saber.ula.ve/handle/123456789/21230
• http://www.saber.ula.ve/handle/123456789/21231
• http://www.saber.ula.ve/handle/123456789/21232
• http://www.saber.ula.ve/handle/123456789/21233
• http://www.saber.ula.ve/handle/123456789/21234
• http://www.saber.ula.ve/handle/123456789/21235
• http://www.saber.ula.ve/handle/123456789/21236
• http://www.saber.ula.ve/handle/123456789/21237
• http://www.saber.ula.ve/handle/123456789/21238
• http://www.saber.ula.ve/handle/123456789/21239
• http://www.saber.ula.ve/handle/123456789/21240
• http://www.saber.ula.ve/handle/123456789/21241
• http://www.saber.ula.ve/handle/123456789/21242
• http://www.saber.ula.ve/handle/123456789/21243
• http://www.saber.ula.ve/handle/123456789/21244
• http://www.saber.ula.ve/handle/123456789/21245
• http://www.saber.ula.ve/handle/123456789/21246
• http://www.saber.ula.ve/handle/123456789/21247
• http://www.saber.ula.ve/handle/123456789/21248
• http://www.saber.ula.ve/handle/123456789/21249
• http://www.saber.ula.ve/handle/123456789/21250
• http://www.saber.ula.ve/handle/123456789/21251
• http://www.saber.ula.ve/handle/123456789/21252
• http://www.saber.ula.ve/handle/123456789/21253
• http://www.saber.ula.ve/handle/123456789/21254
• http://www.saber.ula.ve/handle/123456789/21255
• http://www.saber.ula.ve/handle/123456789/21256
• http://www.saber.ula.ve/handle/123456789/21257
• http://www.saber.ula.ve/handle/123456789/21258
• http://www.saber.ula.ve/handle/123456789/21259
• http://www.saber.ula.ve/handle/123456789/21260
• http://www.saber.ula.ve/handle/123456789/21261
• http://www.saber.ula.ve/handle/123456789/21262
• http://www.saber.ula.ve/handle/123456789/21263
• http://www.saber.ula.ve/handle/123456789/21264
• http://www.saber.ula.ve/handle/123456789/21265
• http://www.saber.ula.ve/handle/123456789/21266
• http://www.saber.ula.ve/handle/123456789/21267
• http://www.saber.ula.ve/handle/123456789/21268
• http://www.saber.ula.ve/handle/123456789/21269
• http://www.saber.ula.ve/handle/123456789/21270
• http://www.saber.ula.ve/handle/123456789/21271
• http://www.saber.ula.ve/handle/123456789/21272
• http://www.saber.ula.ve/handle/123456789/21273
• http://www.saber.ula.ve/handle/123456789/21274
• http://www.saber.ula.ve/handle/123456789/21275
• http://www.saber.ula.ve/handle/123456789/21276
• http://www.saber.ula.ve/handle/123456789/21277
• http://www.saber.ula.ve/handle/123456789/21278
• http://www.saber.ula.ve/handle/123456789/21279
• http://www.saber.ula.ve/handle/123456789/21280
• http://www.saber.ula.ve/handle/123456789/21281
• http://www.saber.ula.ve/handle/123456789/21282
• http://www.saber.ula.ve/handle/123456789/21283
• http://www.saber.ula.ve/handle/123456789/21284
• http://www.saber.ula.ve/handle/123456789/21285
• http://www.saber.ula.ve/handle/123456789/21286
• http://www.saber.ula.ve/handle/123456789/21287
• http://www.saber.ula.ve/handle/123456789/21288
• http://www.saber.ula.ve/handle/123456789/21289
• http://www.saber.ula.ve/handle/123456789/21290
• http://www.saber.ula.ve/handle/123456789/21291
• http://www.saber.ula.ve/handle/123456789/21292
• http://www.saber.ula.ve/handle/123456789/21293
• http://www.saber.ula.ve/handle/123456789/21294
• http://www.saber.ula.ve/handle/123456789/21295
• http://www.saber.ula.ve/handle/123456789/21296
• http://www.saber.ula.ve/handle/123456789/21297
• http://www.saber.ula.ve/handle/123456789/21298
• http://www.saber.ula.ve/handle/123456789/21299
• http://www.saber.ula.ve/handle/123456789/21300
• http://www.saber.ula.ve/handle/123456789/21301
• http://www.saber.ula.ve/handle/123456789/21302
• http://www.saber.ula.ve/handle/123456789/21303
• http://www.saber.ula.ve/handle/123456789/21304
• http://www.saber.ula.ve/handle/123456789/21305
• http://www.saber.ula.ve/handle/123456789/21306
• http://www.saber.ula.ve/handle/123456789/21307
• http://www.saber.ula.ve/handle/123456789/21308
• http://www.saber.ula.ve/handle/123456789/21309
• http://www.saber.ula.ve/handle/123456789/21310
• http://www.saber.ula.ve/handle/123456789/21311
• http://www.saber.ula.ve/handle/123456789/21312
• http://www.saber.ula.ve/handle/123456789/21313
• http://www.saber.ula.ve/handle/123456789/21314
• http://www.saber.ula.ve/handle/123456789/21315
• http://www.saber.ula.ve/handle/123456789/21316
• http://www.saber.ula.ve/handle/123456789/21317
• http://www.saber.ula.ve/handle/123456789/21318
• http://www.saber.ula.ve/handle/123456789/21319
• http://www.saber.ula.ve/handle/123456789/21320
• http://www.saber.ula.ve/handle/123456789/21321
• http://www.saber.ula.ve/handle/123456789/21322
• http://www.saber.ula.ve/handle/123456789/21323
• http://www.saber.ula.ve/handle/123456789/21324
• http://www.saber.ula.ve/handle/123456789/21325
• http://www.saber.ula.ve/handle/123456789/21326
• http://www.saber.ula.ve/handle/123456789/21327
• http://www.saber.ula.ve/handle/123456789/21328
• http://www.saber.ula.ve/handle/123456789/21329
• http://www.saber.ula.ve/handle/123456789/21330
• http://www.saber.ula.ve/handle/123456789/21331
• http://www.saber.ula.ve/handle/123456789/21332
• http://www.saber.ula.ve/handle/123456789/21333
• http://www.saber.ula.ve/handle/123456789/21334
• http://www.saber.ula.ve/handle/123456789/21335
• http://www.saber.ula.ve/handle/123456789/21336
• http://www.saber.ula.ve/handle/123456789/21337
• http://www.saber.ula.ve/handle/123456789/21338
• http://www.saber.ula.ve/handle/123456789/21339
• http://www.saber.ula.ve/handle/123456789/21340
• http://www.saber.ula.ve/handle/123456789/21341
• http://www.saber.ula.ve/handle/123456789/21342
• http://www.saber.ula.ve/handle/123456789/21343
• http://www.saber.ula.ve/handle/123456789/21344
• http://www.saber.ula.ve/handle/123456789/21345
• http://www.saber.ula.ve/handle/123456789/21346
• http://www.saber.ula.ve/handle/123456789/21347
• http://www.saber.ula.ve/handle/123456789/21348
• http://www.saber.ula.ve/handle/123456789/21349
• http://www.saber.ula.ve/handle/123456789/21350
• http://www.saber.ula.ve/handle/123456789/21351
• http://www.saber.ula.ve/handle/123456789/21352
• http://www.saber.ula.ve/handle/123456789/21353
• http://www.saber.ula.ve/handle/123456789/21354
• http://www.saber.ula.ve/handle/123456789/21355
• http://www.saber.ula.ve/handle/123456789/21356
• http://www.saber.ula.ve/handle/123456789/21357
• http://www.saber.ula.ve/handle/123456789/21358
• http://www.saber.ula.ve/handle/123456789/21359
• http://www.saber.ula.ve/handle/123456789/21360
• http://www.saber.ula.ve/handle/123456789/21361
• http://www.saber.ula.ve/handle/123456789/21362
• http://www.saber.ula.ve/handle/123456789/21363
• http://www.saber.ula.ve/handle/123456789/21364
• http://www.saber.ula.ve/handle/123456789/21365
• http://www.saber.ula.ve/handle/123456789/21366
• http://www.saber.ula.ve/handle/123456789/21367
• http://www.saber.ula.ve/handle/123456789/21368
• http://www.saber.ula.ve/handle/123456789/21369
• http://www.saber.ula.ve/handle/123456789/21370
• http://www.saber.ula.ve/handle/123456789/21371
• http://www.saber.ula.ve/handle/123456789/21372
• http://www.saber.ula.ve/handle/123456789/21373
• http://www.saber.ula.ve/handle/123456789/21374
• http://www.saber.ula.ve/handle/123456789/21375
• http://www.saber.ula.ve/handle/123456789/21376
• http://www.saber.ula.ve/handle/123456789/21377
• http://www.saber.ula.ve/handle/123456789/21378
• http://www.saber.ula.ve/handle/123456789/21379
• http://www.saber.ula.ve/handle/123456789/21380
• http://www.saber.ula.ve/handle/123456789/21381
• http://www.saber.ula.ve/handle/123456789/21382
• http://www.saber.ula.ve/handle/123456789/21383
• http://www.saber.ula.ve/handle/123456789/21384
• http://www.saber.ula.ve/handle/123456789/21385
• http://www.saber.ula.ve/handle/123456789/21386
• http://www.saber.ula.ve/handle/123456789/21387
• http://www.saber.ula.ve/handle/123456789/21388
• http://www.saber.ula.ve/handle/123456789/21389
• http://www.saber.ula.ve/handle/123456789/21390
• http://www.saber.ula.ve/handle/123456789/21391
• http://www.saber.ula.ve/handle/123456789/21392
• http://www.saber.ula.ve/handle/123456789/21393
• http://www.saber.ula.ve/handle/123456789/21394
• http://www.saber.ula.ve/handle/123456789/21395
• http://www.saber.ula.ve/handle/123456789/21396
• http://www.saber.ula.ve/handle/123456789/21397
• http://www.saber.ula.ve/handle/123456789/21398
• http://www.saber.ula.ve/handle/123456789/21399
• http://www.saber.ula.ve/handle/123456789/21400
• http://www.saber.ula.ve/handle/123456789/21401
• http://www.saber.ula.ve/handle/123456789/21402
• http://www.saber.ula.ve/handle/123456789/21403
• http://www.saber.ula.ve/handle/123456789/21404
• http://www.saber.ula.ve/handle/123456789/21405
• http://www.saber.ula.ve/handle/123456789/21406
• http://www.saber.ula.ve/handle/123456789/21407
• http://www.saber.ula.ve/handle/123456789/21408
• http://www.saber.ula.ve/handle/123456789/21409
• http://www.saber.ula.ve/handle/123456789/21410
• http://www.saber.ula.ve/handle/123456789/21411
• http://www.saber.ula.ve/handle/123456789/21412
• http://www.saber.ula.ve/handle/123456789/21413
• http://www.saber.ula.ve/handle/123456789/21414
• http://www.saber.ula.ve/handle/123456789/21415
• http://www.saber.ula.ve/handle/123456789/21416
• http://www.saber.ula.ve/handle/123456789/21417
• http://www.saber.ula.ve/handle/123456789/21418
• http://www.saber.ula.ve/handle/123456789/21419
• http://www.saber.ula.ve/handle/123456789/21420
• http://www.saber.ula.ve/handle/123456789/21421
• http://www.saber.ula.ve/handle/123456789/21422
• http://www.saber.ula.ve/handle/123456789/21423
• http://www.saber.ula.ve/handle/123456789/21424
• http://www.saber.ula.ve/handle/123456789/21425
• http://www.saber.ula.ve/handle/123456789/21426
• http://www.saber.ula.ve/handle/123456789/21427
• http://www.saber.ula.ve/handle/123456789/21428