[The role of a biologically treated pond in the increase of oxygen in the water].
D007220:Industrial Waste; D010100:Oxygen; D013696:Temperature; D014586:USSR; D014876:Water Pollution / Q000517:prevention & control*; D014877:Water Pollution, Chemical / Q000517:prevention & control
D007220:Industrial Waste; D010100:Oxygen
Rol' biologicheskogo doochistnogo pruda v obogashchenii vody kislorodom.