Podavlenie ėlektricheskogo ėkha v telefonnykh kanalakh
By: M.K. T͡Sybulin.
Edition: Proizvodstvennoe izd.
Publisher: "Radio i svi͡azʹ"
Published: 1988
Place of publication: Moskva
Language: rus
Number of pages: 111
Subjects: Telephone -- Echo suppressors.
Notes: Bibliography: p. 111-[112]