1
2
3
Published in 1995
Repository
4
5
6
Published in 1992
Repository
7
8
Published in 1992
Repository
9
Published in 2007
Repository
10
Published in 2006
Repository
11
Published in 1993
Repository
12
Published in 1993
Repository
13
by Amores Puyutaxi, Freddy Marcelo; Agama Parreño, Juan Emilio; Mite Vivar, Francisco Arturo; Jiménez Barragán, Juan Carlos; Loor Solórzano, Rey Gastón; Quiroz Vera, James Gonzalo
Published in 2009
Repository
14
Published in 1976
Repository
15
16
17
Published in 1993
Repository
18
Published in 2008
Repository
19
Published in 2008
Repository
20