41
42
Published in 2003
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43
44
45
Published in 2007
Repository
46
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48
by Yumisaca, Fausto; Aucancela, Rodrigo; Panchi, Nancy; Peñaherrera, Diego; Rivadeneira Ruales, Jorge Esteban; Cuesta Subía, Hugo Xavier
Published in 2016
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49
50
Published in 2013
Repository
51
52
53
54
Published in 2000
Repository
55
by Monteros J., Cecilia; Cedeño Ledesma, Josué Santiago; Comina, Paúl; Villacrés, Elena; Rivadeneira Ruales, Jorge Esteban; Andrade, Héctor; Cuesta Subía, Hugo Xavier
Published in 2017
Repository
56
57
58
59
Published in 2008
Repository
60
Published in 2016
Repository