Short description: In Russian. Pavlovsky, Nikolai Nikolaevich. Hydraulic reference book. Leningrad, Moscow: Onti. Chief Editor of Energy Litera, 1937 (Leningrad: type. Leningrad Pravda ). The image is provided for reference only. It may reflect condition of one of the available copies or only help in identifying the edition. Please feel free to contact us for a detailed description of the copies available. SKU5172120