1.
Washington, D.C; s.n; mayo 1989. 49 p.
Non-conventional
in Spanish
| LILACS
| ID: lil-368141
2.
Washington, D.C; s.n; mayo 1989. 13 p.
Non-conventional
in Spanish
| LILACS
| ID: lil-368142
3.
Washington, D.C; Organización Panamericana de la Salud; mar. 1986. 120 p.
Monography
in Spanish
| LILACS
| ID: lil-378221