The ECO guide to careers that make a difference / 
Environmental Careers Organization 
 - Washington :  Island Press,  2004 
 - xxi, 400 p. :  ill., ports. ;  24 cm. 
<br/><br/><label>ISBN: </label>1559639679 (pbk. : alk. paper) 1559639660 (cloth : alk. paper) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences--Vocational guidance.