000 00325nam a2200145Ia 4500
020 _a0074405124
082 _b2022B
_a000
100 _a"Nigel Nelson"
245 0 _aCommunication Codes
260 _bWayland
_aLondon
_c1993
300 _a32
944 _cR
999 _c368288
_d368288