00722cam a22002531  4500001000800000005001700008008004100025010001700066015001500083035001800098040002500116041000800141042001200149080001700161082001700178100000700195101000800202245004100210740002700251906004500278942001200323999001700335952011600352698833420180221035750.0740618s1955    xx            000 0 eng    a   55009714   aGB55-12605  a(OCoLC)921804  aDLCcTxU-DadUkdDLC  aeng  apremarc  a621.38   HER  a621.38   HER1 a30  aCOM10aPrinciples of communication systems.0 aCommunication systems.  a7bcbccoclcrplduencipf19gy-gencatlg  2ddccBK  c43002d43002  00102udc40708PËKGa002b002cPËKGd2018-02-21l0o621.38   HERp002-2999919r2018-02-21w2018-02-21yBK