000 00277nam a22001097a 4500
082 _a363.7392
_bASS
_cD
245 _aAssessment of urban air quality/
_cUNEP and WHO.
260 _aLondon :
_bResearch Centre,
_cc1998.
300 _a100 p. :
_bill. :
650 _aMCE (D)
942 _cBK
999 _c2932
_d2932