Das, Pradip Kumar <br/><br/>
Petroleum and coal / 
Pradip kumar Das, Hrishikesh Baruah 
 - New Delhi :  M. D. Pub.,  1997 
 - 139 p. ;  23 cm. 
<br/><br/><label>ISBN: </label>8175330422  Rs.240.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal<br/>Petroleum
<br/><br/><label>Dewey Class. No.: </label>553.28