Lokras, K. V. Bulletins of the geological survey of India / K. V. Lokras, N. G. Gajbhiye and A. V. Raju - Calcutta : Geological Survey of India, 1981 - 83 p. ; ill. ; 24 cm. - A Economic Geology No.42 A Gargaon tungsten deposit, Nagpur district, Maharastra. . Dewey Class. No.: 555.40061