[Hygienic evaluation of the effectiveness of sewage after purification in biological ponds].
D001673:Biodegradation, Environmental; D006920:Hygiene; D012498:Sanitary Engineering / Q000295:instrumentation*; D012722:Sewage / Q000032:analysis*
D012722:Sewage
Gigienicheskaia otsenka éffektivnosti doochistki stochnykh vod v biologicheskikh prudakh.