Environment/  editor  
John L. Allen 
 - Sixteenth edition 
 -  Dushkin Publishing Group 
 - volume :  illustrations .  28 cm 
<br/><br/> index 
<br/><br/><label>ISBN: </label>0697372669 9780697372666 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental protection--Periodicals<br/>Nature conservation--Periodicals<br/>Ecology--Periodicals
<br/><br/><label>Dewey Class. No.: </label>301.3105 En89 1997