Sung, W. <br/><br/>
On the work with children and youth 

 - Pyongyang  Foreign Languages Publishing House  1978 
 - 375p.  22cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Korea
<br/><br/><label>LC Class. No.: </label>IKR HQ1765.5.K47