The Human Environment 

 - Washington,   1972. 
 - 2 v. ;   28 cm. 
 - Environment ;   201 .
<br/><br/> Contenido.- t. 1. A selective, annotated bibliography of reports and documents on international environmental problems.- t. 2. Summaris of national reports 
<br/><br/><label>Subjects--Topical Terms: </label><br/>EDUCACION-BIBLIOGRAFIA