41
42
43
Published in 1997
Repository
44
45
46
by Reyes Triviño, Segundo; Alarcón Cobeña, Francisco; Arroyave Alvarado, José; Toro García, José; Valarezo Cely, Oswaldo; Zambrano Alvarez, José; Carrillo Alvarado, Rómulo
Published in 1994
Repository
47
48
article
Published in 2012
Repository Revista Universidad Técnica de Manabi
49
article
Published in 2013
Repository Revista Universidad Técnica de Manabi