21
Published in 2004
Repository
22
23
by Potosí Argoti, Byron Fernando; Montesdeoca, Fabián; Andrade-Piedra, Jorge; Paucar, Betty; Alvarado Ochoa, Soraya Patricia
Published in 2010
Repository
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
28
29
Published in 2011
Repository
30
31
32
Published in 1999
Repository
33
by Valverde, Franklin; Torres, Cristhian; Rivadeneira Ruales, Jorge Esteban; Parra, Rafael; Cartagena Ayala, Yamil Everaldo; Alvarado Ochoa, Soraya Patricia
Published in 2010
Repository
34
35
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