000 00326nam a22001337a 4500
020 _a9789380995090
082 _a628.53
_bSIN/AI
100 _aSingh, M.P
245 _aAir pollution and environment
260 _aNew Delhi
_bEnkay publishing house
_c2011
700 _aSingh, Meenakshi
700 _aSingh, B.S
942 _cBK
999 _c341228
_d341228