000 00299nam a2200109Ia 4500
008 210804s1978||||xx |||||||||||||| ||und||
041 _aeng
245 0 _aAir quality criteria and guides for urban air pollution
260 _aGeneva
_bWorl health organisation (who)
_c1978
300 _a35
942 _cBK
999 _c12593
_d12593