1
2
3
4
5
6
Published in 1988
Repository
7
by Alarcón Cobeña, Francisco; Limongi Andrade, Ricardo; Zambrano, Eddie; Navarrete Cedeño, José Bernardo
Published in 2019
Repository
8
Published in 2016
Repository
9
10
11
Published in 1980
Repository
12
13
14
by Reyes Triviño, Segundo; Alarcón Cobeña, Francisco; Arroyave Alvarado, José; Toro García, José; Valarezo Cely, Oswaldo; Zambrano Alvarez, José; Carrillo Alvarado, Rómulo
Published in 1994
Repository