000 00506 a2200133 4500
082 _a621.38
_bOp2t
245 1 _aTELECOMMUNICATION SYSTEMS
260 _aMilton Keynes
_bOpen Univ.
_c1976
300 _a
440 _aTechnology
_v
500 _aContents : Unit 1. Circuits, Filters And Amplifiers -- Unit 2. Modulation -- Unit 3 And 4 Channels And Lines -- Units 5 And 6 Noise And Interference And Digital Systems -- Units 7, 8, 9. Telephone Systems -- 10 Case...
964 _gCIRC
997 _aA70994 s C
999 _c464477
_d464477