1.
Arq. biol. tecnol
;
33(3): 551-60, out. 1990. tab
Article
in Portuguese
| LILACS
| ID: lil-108788
2.
Bol. Oficina Sanit. Panam
;
108(1): 39-45, ene. 1990. graf
Article
in Spanish
| LILACS
| ID: lil-368702