World Book Encyclopaedia: Modern, Pictorial, Comprehensive, Vol.12: N-O 

 -  W F Quarrie Company, Chicago  1937 
 - 5287 
<br/><br/><label>Subjects--Topical Terms: </label><br/>General encyclopedic works
<br/><br/><label>Dewey Class. No.: </label>R 030  WOR.12