Mining on a small and medium scale : a global perspective /
Ghose, Ajoy K.
Global Conference on Small and Medium Scale Mining(1996 :Calcutta, India)
London : Intermediate Technology,
1997.
"This volume collates the proceedings of the Global Conference on Small and Medium Scale Mining (GCSM'96) at Calcutta"--pref
Includes bibliographical references
Mines and mineral resources
Mines and mineral resources
Mines and mineral resources
Mining engineering
Industries