00681nam a2200169 a 450000500170000000800410001703500150005805000290007324501070010226000410020930000190025049000300026965000220029965000250032171000600034681001050040620260817162032.0190311s2001    us a    r     000 0 eng d  a.b12294755 4aJX1977bA2 ST/ESCAP/204000aAir quality in Asia and the Pacific :ban analysis in relation to national and international standards  aNew York :b United Nations, cc2001  a113 p. :bill.1 aDocument ;vST/ESCAP/2040 0aAir QualityzAsia 0aAir QialityzPacific2 aEconomic and Social Commission for Asia and the Pacific2 aUnited Nations.bEconomic and Social Commission for Asia and the Pacific.tDocument ;vST/ESCAP/2040