[The "barrier" role of modern water purification works in relation to chemical ingredients].
D012498:Sanitary Engineering; D014586:USSR; D014867:Water / Q000032:analysis; D014876:Water Pollution; D014881:Water Supply
D014867:Water
"Bar'ernaia" rol' sovremennykh ochistnykh sooruzheniĭ v otnoshenii khimicheskikh ingredientov.