Chowdhary,L.R. and Tripathy,G.N. <br/><br/>
Indian Petroleum Directory 1996 
Chowdhary,L.R. and Tripathy,G.N. 
 - Dehradun  ONGC  1996 
<br/><br/><label>Dewey Class. No.: </label>622.3318  / CHO.I