000			00298nam a2200133Ia 4500
008			160122s9999 xx 000 0 und d
041			_aEnglish
100			_aA K De
245			_aEnvironmental chemistry
250			_a5th
260			_bDelhi:new age _c2004
300			_a406p.
650			_aChemistry
999			_c1453 _d1453