POWELL DUFFRYN TECHNICAL SERVICES LIMITED <br/><br/>
Mining,Utilisation and Processing of the South Arcot Lignite to the Government of India 

 - London, 1954 
 - 125p. + 30 Plates 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Production Economics
<br/><br/><label>Dewey Class. No.: </label>338.4766262  / POW.M