Ihak nonjip. 
 Journal of natural sciences 

 - Sŏul :  Koryŏ Taehakkyo Ikwa Taehak 
 - volumes :  illustrations ;  26 cm 
<br/><br/> Chemical abstracts  0009-2258 
<br/><br/><br/>Korean and English, with summaries in English. 
<br/><br/><label>CODEN: </label>IHNOEC 
<br/><br/><label>LCCN: </label>90657704  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science.<br/>Science.
<br/><br/><label>LC Class. No.: </label>Q4  / .I435