000 00329nam a2200133Ia 4500
100 _aWHO, United Nations Environment Programme & ILO
020 _a92-4-157188-8
250 _a2nd ed
942 _cBK
245 _aNitrogen oxides
260 _aauth, Geneva
_c1997
082 _a363.7384 WHO/EHC
300 _axxiv,550p figs.,tabs.
999 _c34032
_d34032