Bernal, J. D. <br/><br/>
Science in history / 
J. D. Bernal. 
 - 3rd ed. 
 - Middlesex :  Penguin books,  c 1969. 
 - Vols. :  ill. ;  20 cm. 
<br/><br/> Includes index. 
<br/><br/>V. 4- The social sciences: conclusion ; 
<br/><br/>322  322 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science.<br/>HIstory- science.
<br/><br/><label>Dewey Class. No.: </label>500 / B75s