(1956). Report of the regional coal survey station at Bilaspur: (M. P., V. P., & Orissa Coalfields) for the period march 1955 to february 1956. Jharia: Kamala Press.
Dyfyniad Arddull ChicagoReport of the Regional Coal Survey Station At Bilaspur: (M. P., V. P., & Orissa Coalfields) for the Period March 1955 to February 1956. Jharia: Kamala Press, 1956.
Dyfyniad MLAReport of the Regional Coal Survey Station At Bilaspur: (M. P., V. P., & Orissa Coalfields) for the Period March 1955 to February 1956. Jharia: Kamala Press, 1956.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.