Encyclopedia of environmental science 
/ McGraw Hill book Company 
 - New York:   McGraw Hill book Company,   1974 
 - 754p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Subjects--Index Terms: </label>Biology 
<br/><br/><label>Universal Decimal Class. No.: </label>R 577.4(03)  / L4