000 00337nam a2200133Ia 4500
008 220201s1997 xx 000 0 eng d
041 _aENG
100 _aFREEMAN,ROGER.L
245 0 _aTELECOMMUNICATION & TRANSMISSION
250 _a2ND
260 _aLONDON
_bTHAMES AND HUDSON PUBLISHING COMPANY
_c1997
300 _a1204
942 _2ddc
999 _c61708
_d61708