"Short description: In Russian. Matov, Georgy Petrovich. Telephone relays their design and calculation. Leningrad; Moscow: Energoizdat, 1934. Telefonnye rele ikh konstruktsiya i raschet. In Russian /Telephone relays are designed and calculated . 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. SKU9312609"