Blakey. J. <br/><br/>
Intermediate Pure Mathematics: SI Units 

 - 5ed. 
 - London  The Macmillan Press Ltd.  1953 
 - 530 
<br/><br/><label>ISBN: </label>0333223772 
<br/><br/><label>Dewey Class. No.: </label>510 BLA/I