Conditions of mining and manufacturing establishments by sample survey. 

 - Seoul :  KRB,  1963 
 - 16p. :  ill. ;  30 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural resources<br/>Korea<br/>Minerals
<br/><br/><label>Dewey Class. No.: </label>553.1  / KRB