21
22
Published in 1988
Repository
23
24
Published in 1994
Repository
25
by Amores P., Freddy; Espín, Susana; Armijos Paredes, Ana Isabel; Wakao, Harue; Calderón, Laura; Hollywood, Neil; Ramos Carranza, Gladys; Buttler, David; Van Loo, Robert
Published in 2002
Repository
26
27
28
29
Published in 2004
Repository
31
Published in 2002
Repository
32
Published in 2013
Repository
33
by Brito Grandes, Beatriz; Vaillant, Fabrice; Espín, Susana; Lara, Nelly; Valarezo Concha, Manuel Alfonso
Published in 2001
Repository
34
by Brito Grandes, Beatriz; Espín, Susana; Villacrés, Elena; Vaillant, Fabrice; Medina, Gioconda; Arias, Janeth
Published in 2008
Repository
35
36
Published in 2003
Repository