1
other
Published in 1861
Repository Repositorio Biblioteca Digital CCE
2
other
Published in 1861
Repository Repositorio Facultad Latinoamericana de Ciencias Sociales
3
article
by Carpio Freire, Guillermo; Gomez De La Torre, Manuel; Intriago Dueñas, Eduardo; Mancero Gando, Jose; Leuschner Cevallos, Edwin
Published in 2009
Repository Repositorio Escuela Superior Politécnica del Litoral