Groman, Jeff. (Ed.) <br/><br/>
The World Book Encyclopedia Volume 18:  So-Sz. 

 - Chicago:  World Book, Inc.,  1993. 
 - 526p.  25 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ensiklopedi
<br/><br/><label>LC Class. No.: </label>AE5  / .G766 n.d