Coal mines committee; utilisation of the resources 

 -  1947 
<br/><br/><label>Standard No.: </label>92379 
<br/><br/><label>Source: </label> Reports 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal Industry
<br/><br/><label>Dewey Class. No.: </label>"X9D3551t1:N45, H7.1-.3"