Electronic communications /
Roddy, Dennis.
Electronic communications / Dennis Roddy, John Coolen. - 4th ed. - New Delhi : Pearson Education, 2008. - xi, 723 p.
8177585582 :
Telecommunication.
Electronic communications / Dennis Roddy, John Coolen. - 4th ed. - New Delhi : Pearson Education, 2008. - xi, 723 p.
8177585582 :
Telecommunication.