India.Bureau of Public Enterprises <br/><br/>
International seminar on prospects, techniques and economics of coal washing in India: Dec 18,19,20, 1978 Vigyan Bhavan , New Delhi / 
India.Bureau of Public Enterprises 
 - New Delhi,  1978 
 - 200p  col ill;  30cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Production Economics
<br/><br/><label>Dewey Class. No.: </label>338.4766262  / IND