Environmental science :  the study of interrelationships / 
Eldon D. Enger ... [et al.]. 
 - 2nd ed. 
 - Dubuque, Iowa :  W.C. Brown,  c1986. 
 - xi, 537 p. :  ill. (some col.) ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>ISBN: </label>069705103X (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology.<br/>Environmental sciences.