62
Published in 1991
Repository
63
Published in 1994
Repository
64
Published in 1986
Repository
65
Published in 1994
Repository
66
67
68
Published in 1991
Repository
69
Published in 1992
Repository
70
Published in 1982
Repository
71
72
Published in 1990
Repository
73
Published in 1998
Repository
74
Published in 1987
Repository
75
Published in 2016
Repository
76
77
Published in 1997
Repository
78
by Nieto C., Carlos; Tapia B., César; Paredes, Nelly; Nieto E., Mercedes; Añazco R., Mario; Hidrobo U., Gabriela; Flor A., Efrén
Published in 2017
Repository
79
80