Salt, Laura E, Ed.; Sinclair, Robert, Ed. <br/><br/>
Oxford junior encyclopaedia, Vol.7: Industry and commerce 

 -  Oxford University Press, London  1957 
 - 793 
<br/><br/><label>Subjects--Topical Terms: </label><br/>General encyclopedic works - In English
<br/><br/><label>Dewey Class. No.: </label>PG 032  SAL-O.7