Martin, James.
Future Developments in Telecommunications / Martin James. - Englewood Cliffs, N.J. : Prentice-Hall, 1971. - XIII, 413 s.; 25 cm.
Future Developments in Telecommunications / Martin James. - Englewood Cliffs, N.J. : Prentice-Hall, 1971. - XIII, 413 s.; 25 cm.