The protection of young workers employed underground in coal mines :  report II : second item on the agenda / 
International Labour Organisation 
 - Geneva :  International Labor Office,  1951-52 
 - [iii], 40 p. ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal-miners<br/>Labor laws and legislation, International
<br/><br/><label>Dewey Class. No.: </label>331.762233