India.committee on economies in the production of coal
Spotlight on coal: report / India.committee on economies in the production of coal - Culcutta India Book Exchange 1979 - 144p ill; 21cm
Production Economics
Coal industry
338.272 / IND
Spotlight on coal: report / India.committee on economies in the production of coal - Culcutta India Book Exchange 1979 - 144p ill; 21cm
Production Economics
Coal industry
338.272 / IND