Guía curricular en educación ambiental para maestros de ciencias de séptimo grado :  experiencias activas INEDA, Universidad Metropolitana / 

 - Ed. rev. 
 - San Juan, P.R. :  Universidad Metropolitana, Instituto de Educación Ambiental ,  1992. 
<br/><br/>Includes bibliographical references (p. 195-197 ). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental education--Curricula--Puerto Rico.<br/>Education, Secondary--Curricula--Puerto Rico<br/>Environmental education--Study and teaching (Secondary)--Curricula--Puerto Rico.<br/>Human ecology--Study and teaching (Secondary)--Puerto Rico