007760000a22001930004500003000900000005001700009020001500026111009500041710005900136245011800195264005800313300000900371041000800380490005600388650003600444650005000480650002100530650003100551PH-MaWHO20241108112540.0  a928901122X  aWorking Group on Indoor Air Quality: Biological Contaminants (1988 : Rautavaara, Finland).  aWorld Health Organization. Regional Office for Europe.  aIndoor air quality : biological contaminants : report on a WHO meeting, Rautavaara, 29 August - 2 September 1988.  aCopenhagen : bWHO Regional Office for Europe,c1990.  a67p.  aeng  aWHO regional publications. European series ; no.31.  aAir pollutantsxAdverse effects  aAir pollution, IndoorxPrevention and control  aAir microbiology  aAllergensxAdverse effects