21
Published in 1999
Repository
22
Published in 1995
Repository
23
by Cárdenas, A.; Grijalva O., Jorge; Morillo, Eduardo; Ramos Veintimilla, Raúl; Meneses Montesdeoca, Luis Santiago
Published in 2013
Repository
24
25
26
Published in 1996
Repository
27
28
29
by Grijalva O., Jorge; Limongi, Ricardo; Arévalo Vizcaino, Venus; Vera, Roy; Quiroz, J.; Yumbo, A.; Jara, Fausto; Sigcha Morales, Franklin Anthony; Riofrío, José; Cerda, A.
Published in 2012
Repository
30
31
32
Published in 1993
Repository
33
34
35
by Grijalva O., Jorge; Ramos Veintimilla, Raúl; Arévalo Vizcaino, Venus; Barrera A., Paulo; Guerra M., Jaime
Published in 2013
Repository
36
Published in 2013
Repository
37