title: [Hygienic evaluation of the efficiency of the afterpurification of municipal sewage in biological ponds].
mesh_terms: D001673:Biodegradation, Environmental; D004526:Efficiency; D012498:Sanitary Engineering; D012499:Sanitation; D012722:Sewage / Q000032:analysis*; D014455:Ukraine
chemical_list: D012722:Sewage
vernacular_title: Gigienicheskaia otsenka éffektivnosti doochistki gorodskikh stochnykh vod v biologicheskikh prudakh