1.
Cochabamba; UMSS; 1991. 73 p. ^eCuadros, graf.
Monography
in Spanish
| LIBOCS, LIBOSP
| ID: biblio-1313599
2.
Cochabamba; UMSS; 1991. 74 p. ^eCuadros, graf.
Monography
in Spanish
| LIBOCS, LIBOSP
| ID: biblio-1313607