1.
La Paz; s.n; feb.1998. 46 p. (BO).
Thesis
in Spanish
| LILACS, LIBOCS, LIBOSP
| ID: lil-364130
2.
Cochabamba; s.n; dic. 1985. 61 p. ilus.
Thesis
in Spanish
| LIBOCS, LILACS, LIBOE
| ID: biblio-1295262