title: [Evaluation of the operation of small biological purification structures].
mesh_terms: D004957:Estonia; D010084:Oxidation-Reduction; D012498:Sanitary Engineering / Q000295:instrumentation*; D012722:Sewage
chemical_list: D012722:Sewage
vernacular_title: K otsenke raboty malykh biologicheskikh ochistnykh sooruzheniĭ.