The new encyclopaedia Britannica, Vol.11  knowledge in depth 

 - 15th ed. 
 - Chicago  William Benton  1980 
 - 1119 p. 
<br/><br/><label>ISBN: </label>0852293607 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ENCYCLOPAEDIA<br/>ENCYCLOPAEDIA BRITANNICA<br/>ENCYCLOPEDIA<br/>ENCYCLOPEDIA BRITANNICA
<br/><br/><label>Dewey Class. No.: </label>032  / NEW