41
Published in 1991
Repository
42
Published in 1989
Repository
43
Published in 1991
Repository
44
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
45
46
Published in 1980
Repository
47
Published in 1990
Repository
48
Published in 1994
Repository
49
50
51
Published in 1982
Repository
52
Published in 1991
Repository
53
54
Published in 1991
Repository
55
Published in 1991
Repository
56
Published in 1994
Repository
57
Published in 1992
Repository
58
59
Published in 1982
Repository
60
Published in 1991
Repository