Cunningham, William P. <br/><br/>
Principles of environmental science :  inquiry and applications / 
William P. Cunningham, Mary Ann Cunningham. 
 - 4th ed. 
 - New York :  McGraw Hill,  c2008. 
 - xxii, 140 p. : ill. 
<br/><br/> Includes appendices, glossary and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Envronmental sciences--Study and teaching.