Kupchella, Charles E. <br/><br/>
Environmental science :  living within the system of nature / 
by Charles E. Kupchella, Margaret C. Hyland. 
 - 3rd ed. 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1993. 
 - xxvii, 579 p. :  ill. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/>Basic principles of ecology--Homo sapiens in the scheme of natural things. 
<br/><br/><label>ISBN: </label>0132827409 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human ecology.<br/>Power resources.<br/>Pollution.<br/>Conservation of natural resources.<br/>Environmental policy.