Kennedy, George
Electronic communication system / - 4th ed. - Lake Forest: Macmillan, 1992. - xv, 763 p.
0028005929
Telecommunication
621.38 / K351
Electronic communication system / - 4th ed. - Lake Forest: Macmillan, 1992. - xv, 763 p.
0028005929
Telecommunication
621.38 / K351