Witters, Weldon L. <br/><br/>
Environmental biology:  principles of ecology / 
P.S.Verma, V.K.Agarwal. 
 - Dubuque, Iowa :  Kendall/Hunt Pub. Co.,  c1978. 
 - x, 241 p. :  ill. ;  24 cm. 
<br/><br/>Bibliography: p. 219. 
<br/><br/><label>ISBN: </label>8121908590 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human ecology.<br/>Man--Influence on nature.<br/>Pollution.
<br/><br/><label>Dewey Class. No.: </label>628.5  / WIT