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

gan Chaulya, S. K., Chaulya, S. K.
Cyhoeddwyd 2003

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

gan Panda, P., Panda, P.
Cyhoeddwyd 1989