Electronic communications /
Roddy, Dennis, 1931-
Electronic communications / [Book]. Dennis Roddy, John Coolen. - 3rd ed. - Virginia : Reston publishing Company Inc., 1984. - xii, 788 p. : ill. ; 24 cm.
Includes index.
0835915980
84003460
Telecommunication.
Electronic communications / [Book]. Dennis Roddy, John Coolen. - 3rd ed. - Virginia : Reston publishing Company Inc., 1984. - xii, 788 p. : ill. ; 24 cm.
Includes index.
0835915980
84003460
Telecommunication.