SARKAR, S K
MECHANISED LONGWALL MINING - NEW DELHI OXFORD & IBH 1998 - viii+240p.,24X16CMS.
81-204-1250-8
622.33 S243
MECHANISED LONGWALL MINING - NEW DELHI OXFORD & IBH 1998 - viii+240p.,24X16CMS.
81-204-1250-8
622.33 S243