Avance pionero /
Avance pionero /
Universidad Católica de Puerto Rico
- Ponce, P.R. 1981.
- volumen : illustrations (black and white) ; 28 cm.
- Monthly
Assessment, Evaluation, and Programming System--Puerto Rico--Periodicals
Puerto Rico--Periodicals.
Assessment, Evaluation, and Programming System--Puerto Rico--Periodicals
Puerto Rico--Periodicals.