Encyclopaedia Britannica, Vol.20 : SCHUTZ to SPEKE; A New Survey of Universal Knowledge 

 - Chicago  Encyclopaedia Britannica Inc. William Benton, Publisher  1967 
 - 1194 p. 
<br/><br/> Illustrated with Photos, Maps, Pictures 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopaedia<br/>General
<br/><br/><label>Dewey Class. No.: </label>R032  / E.B.