000 00312nam a2200133Ia 4500
008 221229s9999 xx 000 0 und d
100 _aManivasakam, N.
245 0 _aEnvironmental Pollution
250 _a2nd
260 _aIndia
_bNational Book Trust
_c1999
300 _a160
650 _aEducation
942 _cBK
999 _c7742
_d7742