Cunningham, William P. <br/><br/>
Principles of environmental science :  inquiry and applications / 
William P. Cunningham, Mary Ann Cunningham. 
 - 4th ed. 
 - New Delhi :  Tata McGraw-Hill,  2009. 
 - xxii, 410 p. :  ill. , maps ;  28 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0071214496 (ISE) 0072509317 (pbk. : acid-free paper) 0072919833 
<br/><br/><label>LCCN: </label>2002151069 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences.