12201
12202
12203
Published in 1988
Repository
12204
Published in 1988
Repository
12205
Published in 2002
Repository
12206
12207
Published in 1982
Repository
12208
Published in 1977
Repository
12209
12210
Published in 2002
Repository
12211
12212
12213
by Pilapaña Juiña, Gladys Silvana; Racines Jaramillo, Marcelo Rafael; Mendoza, Luis; Vásquez C., Wilson
Published in 2012
Repository
12214
12215
Published in 1981
Repository
12216
Published in 1986
Repository
12217
Published in 2009
Repository
12218
Published in 1985
Repository
12219
by Macías Andrade, Jorge; Cool Loor, Juan; Loor Velásquez, Ronald; Pinargote García, Luis Fernando; Molina Hidrovo, Carlos Alberto
Published in 2018
Repository