George M Van Dyne <br/><br/>
Ecosystem concept in natural resource management 

 - New York  Academic Press  1969 
 - 383p 
<br/><br/>George M Van Dyne: Ecosystem concept in natural resource management.  New York.  Academic Press, 1969.--(574.5VAN)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>574.5  / VAN