American environmentalism 

 - Detroit:  Greenhaven Press,  2002 
 - 219 p. : ill. ; 21 cm 
<br/><br/><label>ISBN: </label>9780737710441 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Conservation of natural resources - United States
<br/><br/><label>Dewey Class. No.: </label>333.720973 BAR