Environmental science 
[by] Amos Turk [and others] 
 - Philadelphia,  Saunders,  1974. 
 - Saunders golden series .
<br/><br/>Includes bibliographies. 
<br/><br/><label>ISBN: </label>0721689280 
<br/><br/><label>LCCN: </label>73086387 //r92 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology.<br/>Environmental sciences.
<br/><br/><label>LC Class. No.: </label>QH541  / .E57 
<br/><br/><label>Dewey Class. No.: </label>301.31