[Transfer of part of water flow from the northern rivers to the Volga basin - a new hygienic problem].
D005618:Fresh Water; D012426:Russia; D013672:Technology; D014876:Water Pollution / Q000517:prevention & control; D014881:Water Supply
Perebroska chasti stoka severnykh rek v basseĭn Volgi - novaia gigienicheskaia problema.