Turk, Jonathan. <br/><br/>
Ecosystems, energy, population 

 - Philadelphia :  Saunders,  1975 
 - 296 p.  : ilus. ; mapas ; gráfs. 
<br/><br/><label>LCCN: </label>54825 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecología.<br/>Ecosistema.
<br/><br/><label>Dewey Class. No.: </label>581.5  / T8