National Coal Development Corporation Limited <br/><br/>
Annual report and accounts 1969-70 / 
National Coal Development Corporation Limited 
 - Ranchi,   NCDCL  1970 
 - 104p  ill;  23cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Production Economics<br/>Coal industry
<br/><br/><label>Dewey Class. No.: </label>338.272  / NAT