Introduction ... [National Academy of Sciences] 

 - Seoul :  The Academy,  1975 
 - 29 p. :  ill. ;  21 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Korea
<br/><br/><label>Subjects--Geographic Terms: </label><br/>National Academy of Sciences (Korea)
<br/><br/><label>Dewey Class. No.: </label>509.519