Dyfyniad APA

India. Dept. of Coal & India. Dept. of Coal. Annual report - Department of Coal. Govt. of India, Ministry of Energy, Dept. of Coal.

Dyfyniad Arddull Chicago

India. Dept. of Coal and India. Dept. of Coal. Annual Report - Department of Coal. New Delhi: Govt. of India, Ministry of Energy, Dept. of Coal.

Dyfyniad MLA

India. Dept. of Coal and India. Dept. of Coal. Annual Report - Department of Coal. Govt. of India, Ministry of Energy, Dept. of Coal.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.