61
Published in 2000
Repository
62
63
by Peralta I., Eduardo; Murillo I., Angel; Mazón, Nelson; Rodríguez Ortega, Diego Geovanny; Minchala G., Luis; Domínguez Olmedo, Diana Elizabeth; Mina Chala, Diego Fernando
Published in 2015
Repository
64
Published in 2011
Repository
65
Published in 1993
Repository
66
67
Published in 2004
Repository
68
69
70
Published in 2010
Repository
71
72
Published in 2017
Repository
73
Published in 2011
Repository
74
Published in 2000
Repository
75
76
77
78
Published in 1998
Repository
79
80
Published in 1998
Repository