The minimum age of admission to work underground in coal mines :  sixth item on the agenda/ 
International Labour Office, Geneva 
 - Geneva :  International Labour Office,  1952 
 - [ii], 14 p. ;  24 cm. 
<br/><br/> At head of title : report 6 (1) : International Labour Conference. 36th sess., 1953 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children--Employment<br/>Coal miners<br/>Children--Law
<br/><br/><label>Dewey Class. No.: </label>331.063