00631nam a2200229 4500 BD-DhUL 20150226112150.0 150113s2012 ii a|||| |||| 001 0 eng d 8121915473 BD-DhUL BD-DhUL 628 DUE Duggal, K. N. Elements of environmental engineering / K. N. Duggal. Rev. and enl. New Delhi : Chand, 2012. xviii, 451 p. : ill. ; 25 cm. US$ 4.05 Includes index Bibliography: [p. 431-432] Environmental engineering. ddc BK 30396 30396 0 0 ddc 0 628_000000000000000_DUE 0 NFIC 57528 DUSL DUSL GEN 2012-11-04 Purchased 628 DUE 473364 2015-01-13 3 2015-01-13 BK 0 0 ddc 0 628_000000000000000_DUE 0 NFIC 59763 DUSL DUSL GEN 2008-06-17 Purchased 628 DUE 424510 2015-01-15 2015-01-15 BK 0 0 ddc 0 628_000000000000000_DUE 0 NFIC 60342 DUSL DUSL GEN 2011-03-10 Purchased 628 DUE 457557 2015-01-17 1 2015-01-17 BK