000 00419nam a2200181Ia 4500
008 210723s9999||||xx |||||||||||||| ||und||
020 _a£9,812,406,115
035 _a21457
082 _a621.382
_BELE / BLA
100 _aBlake, Roy
245 0 _aElectronic Communication Systems
250 _a2nd
260 _aAustralia
_bThomson
300 _a985
500 _a0
650 _aTelecommunication
942 _cBK
999 _c31223
_d31223