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020 _a81-219-0883-3
082 _a574.192
082 _bDAR/A
100 _aDR.SS.
_bDARA
245 2 _aa text book of envirormental chemistry and pollution control
260 _aRAM NAGAR ,NEW DELHI
260 _bS.CHAND &COMPANY LTD
260 _c1993
999 _c3314
_d3314