000 00338nam a2200145Ia 4500
008 220926s9999 xx 000 0 und d
100 _aM.N.Rao & H.V.N.Rao
245 0 _aAir Polution
250 _a2nd RP
260 _aNew Delhi
260 _bTata Mc Graw Hill Book Compamy
260 _c1992
650 _aAir Polution
942 _cBK
999 _c15154
_d15154