The encyclopedia of world knowledge :  science part two chemitry, anatomy, psychology,psychiatry, biology, zoology and botany / 

 - New York:  The Frontier Press Company,  ©1970. 
 - 2 v. (various paging) :  28 cm. 
 -  2 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedia of world.
<br/><br/><label>LC Class. No.: </label>031 
<br/><br/><label>Dewey Class. No.: </label>031