Ecosystems, energy, population / 
Jonathan Turk ... [et al.]. 
 - Philadelphia :  Saunders,  c1975. 
 - xi, 296 p. :  ill. ;  27 cm. 
 - Saunders golden series in environmental studies .
<br/><br/> Supplemented by: Instructor's guide to accompany Ecosystems, energy, population /Jonathan Turk [and others]. (49 p. ; 27 cm.) published : Philadelphia : Saunders, 1975. Call number: QH541.E32 Suppl. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>0721689302 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology.<br/>Human ecology.
<br/><br/><label>Dewey Class. No.: </label>301.31  / ECO 1975