Cunnigham, William P. <br/><br/>
Principles environmental science :  inquiry and application / 
William P. Cunningham, Mary Ann Cunningham. 
 - 5th edition 
 - Boston :  C&E Publishing, Inc,  c2010. 
 - xxiii,468p.;ill. 
<br/><br/> includes glossary, index and appendices 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Science