000 00531nam a2200181Ia 4500
008 220901s9999 xx 000 0 und d
041 _a  ENGLISH
082 _a628.53
082 _bBUR
100 _aBUREAU OF INDIAN STANDARDS
245 0 _aIS : 5182 (PART 21) 2001 INDIAN STANDARD METHODS FOR MEASUREMENT OF AIR POLLUTION PART 21 NON METHAN
260 _aNEW DELHI
260 _bBUREAU OF INDIAN STANDARDS.
260 _c2001
300 _a6
650 _a  METHODS FOR MEASUREMENT OF AIR POLLUTION
942 _cREF
999 _c137899
_d137899