000 00276nam a2200121Ia 4500
008 160122s9999 xx 000 0 und d
041 _aEnglish
100 _aM N Rao
245 _aAir polution
260 _bDelhi:Tata Mcgraw hill
_c2004
300 _a339p.
650 _aChemistry
999 _c1611
_d1611