title: [Purification of domestic sewage in small settlements].
mesh_terms: D006376:Helminths; D012423:Rural Health; D012426:Russia; D012498:Sanitary Engineering; D012722:Sewage
chemical_list: D012722:Sewage
vernacular_title: Ochistka bytovykh stochnykh vod malykh naselennykh punktov.