The New Encyclopaedia Britannica in 30 Volumes :  Micropaedia, IX 

 - 15th ed. 
 - Chicago :  Encyclopaedia Britannica,  1979. 
 - 1025 p. :  il. 
<br/><br/> Micropaedia(volumes I to X): Ready Reference and Index. Volume IX: Scurlock - Tirah 
<br/><br/><label>ISBN: </label>0-85229-399-9 
<br/><br/><label>Index Terms--Genre/Form: </label><br/>ENCICLOPEDIA