Short description: In Russian. Efros, Daniil Abramovich. Studies of filtering heterogeneous systems. Leningrad: State Tekhizdat. Leningrad Division, 1963. Issledovaniya fil'tratsii neodnorodnykh sistem. In Russian /Research on filtering heterogeneous systems . 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. SKU6499367