1.
Guatemala; INCAP; 1991. 49 p. ilus. (INCAP/SE/001).
Monography
in Spanish
| LILACS
| ID: lil-311485
2.
Guatemala; s.n; mar. 1990. 67 p. (INCAP/T-517).
Thesis
in Spanish
| LILACS
| ID: lil-311956