Group by: Item Type | No Grouping Number of items: 2. Rao, S. Ranga Raja (1978) International seminar on coal washing. Journal of Mines, Metals & Fuels, 26 (12). pp. 419-428. ISSN 0022-2755 Sarkar, G.G. and Rao, S. Ranga Raja (1978) Beneficiation of low-grade coals of south Eastern Asia and Australasia. Journal of Mines, Metals & Fuels, 26 (1). pp. 57-64. ISSN 0022-2755 |