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