Assessment and Management of Air Quality for an Opencast Coal Mining Area

著者: Chaulya, S. K., Chaulya, S. K.
出版事項 2003

The Problem of Displaced People: A Study in the Coal Mines of Brajraj Nagar, Sambalpur, Orissa

著者: Panda, P., Panda, P.
出版事項 1989