Park, Sanguk. <br/><br/>
Why?Scientific events in history (Korean) : Why?과학사건 / 
Sanguk Park ; illustrated by Taehun Lee. 
 - Seoul, Korean :  Yearimdang,   2011. 
 - 159 p. 
<br/><br/><label>ISBN: </label>9788930202794 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Korean language materials.