1
article
Published in 2006
Repository Repositorio Universidad Politécnica Salesiana
2
article
Published in 2010
Repository Repositorio Universidad Politécnica Salesiana
3
article
Published in 2004
Repository Revista ICONOS
4
article
Published in 2004
Repository Repositorio Facultad Latinoamericana de Ciencias Sociales
5
article
Published in 1986
Repository Repositorio Facultad Latinoamericana de Ciencias Sociales