41
Published in 1992
Repository
42
43
44
Published in 1982
Repository
45
46
Published in 1990
Repository
47
Published in 1998
Repository
48
Published in 1987
Repository
49
50
Published in 1994
Repository
51
52
Published in 1997
Repository
53
Published in 1993
Repository
54
Published in 1994
Repository
55
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
56
57
58
59
Published in 1991
Repository
60