41
Published in 1991
Repository
42
Published in 1994
Repository
43
Published in 1986
Repository
44
Published in 1994
Repository
45
46
47
Published in 1991
Repository
48
Published in 1992
Repository
49
Published in 1982
Repository
50
51
Published in 1990
Repository
52
Published in 1998
Repository
53
Published in 1987
Repository
54
Published in 2016
Repository
55
56
Published in 1997
Repository
57
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
58
59
60
Published in 1991
Repository