e6503375_009__Tanpa_Klasifikasi_Lugansk__3
[0] 128. [1] Ultra-violet radiation is carried out to prevent in hospital infections in the premises of the medical institutions. What is its health-improvement action evaluated with? [2] *Degree and index of effectiveness [4] Dust content [5] Ozone content [6] Carbon dioxide content [3] 
Multinle of air-exchange
Krok 2009: Tanpa Klasifikasi Lugansk
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