00593nam a22002057a 4500 BD-DhUL 20150114150521.0 150114s1997 ii a|||| |||| 001 0 eng d 9788122409741 BD-DhUL eng BD-DhUL 622.334 SIP Sing, R. D. Principles & practices of modern coal mining / R. D. Sing New Delhi : New age international, c1997. xxiv, 696p. : ill. ; 24 cm. IRS 250 Bibliographical references & index. Coal mining ddc BK 30956 30956 0 0 ddc 0 622_334000000000000_SIP 0 NFIC 58506 DUSL DUSL GEN 2011-12-07 Purchased 622.334 SIP 461732 2015-01-14 1 2015-01-14 BK 0 0 ddc 0 622_334000000000000_SIP 0 NFIC 58507 DUSL DUSL GEN 2011-12-07 Purchased 622.334 SIP 461733 2015-01-14 2 2015-01-14 BK