Volga landscapes. Barges, steamers and motor ships sail along the Volga River. The dam of the Volga hydroelectric station. Research vessel of the Institute of Biology of Inland Waters of the USSR Academy of Sciences on the Volga River. Scientists of the institute conduct experiments, take water samples, study the underwater fauna and flora of the Volga River. Treatment facilities, biological water treatment plants on the Volga. Fishing inspection boat on the Volga. Ichthyologists of the Institute of Sturgeon Economy work on the Volga and its reservoirs. Forest shelter belts on the banks of the Volga. Chief engineer for landscaping the banks of the Volga I. P. Dudarev at work.