Bernal, J.D. . <br/><br/>
Science in History:vol 3 The natural science in our time /  Textual Documents 
J.D. Bernal. 
 - 3rd ed / 
 - Middlesex :  Penguin Books ,  1965. 
 - 704-1006 ;  22cm. 
<br/><br/>Bibliography and Index 
<br/><br/><label>ISBN: </label> PB 
<br/><br/><label>Subjects--Index Terms: </label>History and Science T/G-Science 
<br/><br/><label>Dewey Class. No.: </label>509  / B 469Sc