000			00342nam a2200133Ia 4500
008			190829s9999||||xx |||||||||||||| ||und||
020			_a9788170413524
100			_aTyagi, O. D
245		0	_aTextbook of Environmental Chemistry
260			_bAnmol Publications _aNew Delhi _c1990
650			_aChemistry
700			_aMehra, M
942			_cBK
999			_c10235 _d10235