21
by Peralta I., Eduardo; Mazón, Nelson; Subía G., Cristian; Estrella Sandoval, Ana Paola; Pinzón Z., José
Published in 2004
Repository
22
by Mazón, Nelson; Peralta I., Eduardo; Murillo I., Angel; Falconí-Castillo, Esteban; Monar B., Carlos; Subía G., Cristian; Estrella Sandoval, Ana Paola; Pinzón Z., José
Published in 2007
Repository
23
24
Published in 2003
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28
Published in 2004
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29
Published in 2009
Repository
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33
Published in 2004
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34
35
Published in 2009
Repository
36
37
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40
Published in 2003
Repository