Coal, the prime energy source in India its resources, production development and certain environmental implications till 2000 AD / World energy conference 
 Congress of the world energy conference, India September 18-23, 1983 12 

 - London  WEC  1983 
 - P.V 
 - World energy conference .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics<br/>World energy conference