[Hygienic evaluation of the operation of biological sewage purification installations].
D001673:Biodegradation, Environmental; D006920:Hygiene; D012426:Russia; D012498:Sanitary Engineering; D012722:Sewage / Q000032:analysis*; D014876:Water Pollution / Q000032:analysis
D012722:Sewage
O gigienicheskoĭ otsenke raboty sooruzheniĭ biologicheskoĭ ochistki stochnykh vod