Reports    Protection of young workers employed underground in coal mines 

 - NA  NA         1948 
<br/><br/><label>Standard No.: </label>136,529 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ECONOMICS
<br/><br/><label>Dewey Class. No.: </label>X9D3551:911, H8