[Some problems of the sanitary state of the upper reaches of the Saratov reservoir].
D012426:Russia; D012722:Sewage; D014876:Water Pollution / Q000517:prevention & control*; D014881:Water Supply
D012722:Sewage
Nekotorye voprosy sanitarnogo sostoianiia verkhov'ia Saratovskogo vodokhranilishcha.