Cho, Youngseon. <br/><br/>
Why?Information and Communication (Korean) : Why?정보통신 / 
Youngseon Cho ; illustrated by Kangho Kim. 
 - Seoul, Korea :  Yearimdang,  2008. 
 - 159 p. 
<br/><br/><label>ISBN: </label>9788930206587 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Korean language materials.