000 00272nam a2200109Ia 4500
008 220201s9999 xx 000 0 eng d
100 _aTRIVEDI (PR) & GURDEEP RAJ
245 0 _aENVIRONMENTAL AIR POLLUTION
250 _a1ST
260 _bAKASHDEEP PUB. HOUSE
942 _2ddc
999 _c98730
_d98730