World directory of environmental organizations. 

 - 2nd. 
 - Claremont :  California,  1976. 
 - v ;  28 cm. 
<br/><br/> Closed. 
<br/><br/><label>LCCN: </label>7310511  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Conservation of natural resources--Directories--Periodicals.<br/>Environmental protection--Directories--Periodicals.