Regional supply of coal 

 - Calcutta  India            1964 
 - 16p  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal  Industry
<br/><br/><label>Dewey Class. No.: </label>X9(F551):3.2, J4/GD