21
22
23
Published in 1999
Repository
24
Published in 1997
Repository
25
26
Published in 1999
Repository
27
bachelorThesis
Published in 2010
Repository Repositorio Universidad de las Fuerzas Armadas
28
bachelorThesis
Published in 2011
Repository Repositorio Escuela Superior Politécnica de Chimborazo
29
bachelorThesis
Published in 2018
Repository Repositorio Escuela Superior Politécnica Agropecuaria de Manabí
30
31
Published in 1990
Repository
32
Published in 1988
Repository
33
Published in 1995
Repository
34
Published in 1998
Repository
35
36
37
38
by Caviedes C., Mario; Yánez G., Carlos; Silva, Edison; Dobronsky, Jorge; Caicedo, Marlon; Zambrano Mendoza, José Luis; Heredia, Jorge
Published in 2002
Repository
39