000 00323nam a2200121Ia 4500
008 240112s9999 xx 000 0 und d
082 _aRAO-A
_b363.73
100 _aRao, M N; Rao, H V N
245 0 _aAir pollution
260 _a New Delhi
_bTATA McGraw-Hill Publishing Company Ltd.
_c1989
650 _aPollution
942 _cBK
999 _c1507
_d1507