1.
s.l; Centro Panamericano de Ecologia Humana y Salud; 2 ed; 1985. 91 p. tab.
Monography
in Spanish
| LILACS, MINSALCHILE
| ID: lil-28199
2.
s.l; Centro Panamericano de Ecologia Humana y Salud; 1984. 89 p. ilus, tab.
Monography
in Spanish
| LILACS
| ID: lil-46018