Arma, Karen. <br/><br/>
Environmental science / 
Karen Arms 
 - Int. ed. 
 - Philadelphia, Pa. :  Saunders College Pub,  c1990 
 - xix, 468 p. ;  28 cm. 
<br/><br/><label>ISBN: </label>0030470986 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Conservation of natural resources<br/>Economic development--Environmental aspects
<br/><br/><label>Dewey Class. No.: </label>333.7  / ARM