000			00320nam a2200133Ia 4500
008			221229s9999 xx 000 0 und d
100			_aManivawsakam, N.
245		0	_aEnvironmental Pollution
250			_aIst
260			_aNew Delhi _bNational book trust _c1999
300			_a160
650			_aGenral
942			_cBK
999			_c38661 _d38661