121
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123
Published in 1988
Repository
124
125
126
127
by Barrera, Víctor Hugo; Cruz, Elena; Cárdenas de Mera, Flor María; Cobeña Ruiz, Gloria; Zambrano Lucero, Hector Miguel
Published in 2010
Repository
128
Published in 2010
Repository
129
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131
by Navarrete Cedeño, José Bernardo; Cañarte Bermúdez, Ernesto; Chérrez, César; Velásquez, José; García, Jefferson; Reyes, Carlos
Published in 2016
Repository
132
133
134
Published in 1973
Repository
135
Published in 1989
Repository
136
Published in 2012
Repository
137
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139
bachelorThesis
Published in 2017
Repository Repositorio Universidad Estatal de Bolivar
140
masterThesis
Published in 2015
Repository Repositorio Universidad Tecnológica Equinoccial