1.
Asunción; EDUNA; sept. 1995. 145-73 p.
Monography
in Spanish
| LILACS, BDNPAR
| ID: lil-219970
2.
Asunciòn; IICS. Departamento de Medicina Tropical; 1993. 23 p.
Monography
in Spanish
| LILACS, BDNPAR
| ID: lil-244053