1.
Cochabamba; s.n; oct. 1968. 31 p.
Thesis
in Spanish
| LIBOCS, LILACS, LIBOE
| ID: biblio-1295682
2.
Cochabamba; s.n; oct. 1968. 31 p.
Thesis
in Spanish
| LIBOCS, LILACS, LIBOSP
| ID: biblio-1314866