Cunningham, William P. <br/><br/>
Principles of environmental science :  inquiry and applications / 
William P. Cunningham, Mary Ann Cunningham. 
 - 3rd ed. 
 - Dubuque, IA :  McGraw-Hill,  c2006. 
 - xviii, 428 p. :  ill. (some col.), maps ;  28 cm. 
<br/><br/> Includes index. 
<br/><br/><br/>eng. 
<br/><br/><label>ISBN: </label>0072823399   TZS 8000/= 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences--Textbooks.<br/>Environmental Conservation
<br/><br/><label>Dewey Class. No.: </label>363.7 CUN