Biswas, N. N.
Principles of carrier communication - 1st ed. - New York Asia publishing 1969 - viii, 232 p. illus.
Telephone: Carrier current
623.8 / BIS/1969
Principles of carrier communication - 1st ed. - New York Asia publishing 1969 - viii, 232 p. illus.
Telephone: Carrier current
623.8 / BIS/1969