Book of popular science 
/ The Book of Knowledge 
 - New York:   The Grolier Society Inc.,   1974 
 - 420p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural history
<br/><br/><label>Subjects--Index Terms: </label>Science Technology 
<br/><br/><label>Universal Decimal Class. No.: </label>R 5(03)  / L4.1