Simmons, I.G.  . <br/><br/>
Ecology of natural resources /  
by I.G. Simmons. 
 - 2nd ed /  
 - London :   Edward Arnold (Publishers) Ltd. ,   1974 
 - 438p ;  
<br/><br/><label>ISBN: </label>0-7131-6358-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology
<br/><br/><label>Dewey Class. No.: </label>G:55  / L4,M1