Charles, Southwick H. <br/><br/>
Ecology and the quality of our environment 
/ by Charles H. Southwick.  
 - New York :  D.Van Nostrand Company,  1972. 
 - xvi, 319 p. ;  24 cm. 
<br/><br/><label>ISBN: </label>0442279205 
<br/><br/><label>Subjects--Index Terms: </label>Ecology; Human ecology; Pollution; 
<br/><br/><label>Dewey Class. No.: </label>570.1 CHA  / 426