DAS,S.K
MINE MANAGEMENT, LIGISLATION & GENERAL SAFETY(COAL)1996 - DHANBAD Dhanpat Rai Publications 1996 - xii+240p.,21X13Cms.
622.068026 D229
MINE MANAGEMENT, LIGISLATION & GENERAL SAFETY(COAL)1996 - DHANBAD Dhanpat Rai Publications 1996 - xii+240p.,21X13Cms.
622.068026 D229