[Hygienic effectiveness of the operation of drinking water contact filtration plants].
D005374:Filtration / Q000295:instrumentation; D011890:Railroads; D012498:Sanitary Engineering / Q000295:instrumentation*; D014586:USSR; D014881:Water Supply / Q000032:analysis*
O gigienicheskoĭ éffektivnosti raboty kontaktnykh osvetliteleĭ pit'evoĭ vody.