00527nam a22001937a 4500 BD-DhSAU 6294 BD-DhSAU 20150507135909.0 150507b1990 ii a|||| |||| 00| 0 eng d 8170413524 BD-DhSAU 22 363.7384 TYT Tyagi, O. D. A textbook of environmental chemistry / O. D. Tyagi... [et. al.] New delhi : Anmol publications , c1990. 404 p.: ill. ; 21 cm. Imran Chemistry ddc BOOK 6294 6294 0 0 ddc 0 1 BD-DhSAU BD-DhSAU REF 1993-06-17 0 363.7384 TYT 23247 2015-05-07 00:00:00 2015-05-07 BOOK