Bernal, John Desmond <br/><br/>
Science in history Vol.4 

 - London  : C. A. Watts and Company,  1969 
 - Various pages  : ill.  ; 20cm. 
<br/><br/>Includes bibliography<br/><br/> 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science and civilization<br/>Civilization, History
<br/><br/><label>LC Class. No.: </label>CB151.B4 Vol.4