Das, Pradip Kumar. <br/><br/>
Petroleum and coal /  
by Pradip Kumar Das,Hrishikesh Baruah. 
 - 1st ed /  
 - New Delhi :   M.D.Publications Pvt.Ltd. ,   2997 
 - vii,139p :  
<br/><br/><label>ISBN: </label>81-7533-042-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology
<br/><br/><label>Dewey Class. No.: </label>H2  / N7;2