41
42
43
44
Published in 2012
Repository
45
46
by Paucar, Betty; Gallegos, Patricio; Nieto C., Carlos; Córdova, Juan J.; Rodríguez I., Luis F.; Ochoa L., José; Williams, Roger
Published in 2000
Repository
47
48
49
Published in 2012
Repository
50
Published in 1994
Repository
51
52
53
Published in 2011
Repository
54
55
Published in 1997
Repository
56
57
by Ochoa L., José; Gallegos, Patricio; Asaquibay, César; Insuasti, María Luisa; Galarza, V.; Jaramillo, A.; Vizuete, B.; Viera, William; Viteri, J.; Williams, Roger; Carrasco, I.; Martínez, Aníbal; Ayala, G.
Published in 2001
Repository
58
Published in 1990
Repository
59
60