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020 _c85
040 _aMAIN
041 _aEnglish
082 _a628
_bT977
100 _aTyagi, O. D.
245 0 _aTextbook Environmental chemistry
_cO. D. Tyagi, M. Mehra
260 _bAnmol publications
_aNew Delhi
_c1996
300 _a404p.
650 _aChemistry
700 _aMehra, M
_42nd auth.
942 _cBK
999 _c9870
_d9870