000 00394nam a2200145Ia 4500
008 230711s9999||||xx |||||||||||||| ||und||
041 _aENG
082 _a541
_bWO-S
100 _aWorld Health Organisation
245 0 _aSelected methods of measuring air pollutants
250 _a1st
260 _c1976
_aNew Delhi
_bWorld Health Organisation Geneva
650 _aCivil Engineering
942 _cBK
999 _c2067
_d2067