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