21
22
23
24
25
26
by Delgado Cerón, Amanda Janeth; Suquillo, Jovanny; Sevillano, Carlos; Rodríguez I., Luis F.; Alvarado Ochoa, Soraya Patricia
Published in 2013
Repository
27
Published in 2016
Repository
28
29
Published in 2017
Repository
30
31
32
33
34
35
36
37
Published in 1993
Repository
38
by Suquillo, Jovanny; Sevillano, Carlos; Camacho, José; Nieto Beltrán, María; Yumisaca, Fausto; Aucancela, Rodrigo; Peñaherrera, Diego
Published in 2017
Repository
39
Published in 2010
Repository
40