000 00288nam a22001217a 4500
020 _a0-408-00030-9
082 _a621.3803 BON'D
100 _aBONLS, R.A
_978641
245 _aDICTIONARY OF TELECOMMUNICATIONS
260 _aLONDON
_bBUTTERWORTH
_c1970
300 _aVII, 200P
942 _cBK
999 _c583754
_d583754