Environment 

 - Washington, DC :  Heldref Publications,  1959- 
 - v. ;  25 cm. 
 - Bimonthly 
 - v. 26 (1984)- 
<br/><br/> UKM: v.26-40 (1984-1998). 
<br/><br/><label>ISSN: </label>0013-9157 
 = Environment Environment 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environment protection--Periodicals