1.
San José; Ciudad Universitaria "Rodrigo Facio"; 1995. 75 p. ilus.
Thesis
in Spanish
| PAHO
| ID: pah-27677
2.
San José; s.n; 1995. 75 p. ilus.
Thesis
in Spanish
| LILACS
| ID: lil-374769
3.
San José; s.n; 1995. 75 p. ilus.
Thesis
in Spanish
| LILACS
| ID: lil-169689