000 00382nam a2200133Ia 4500
100 _aJ. ATKINSON
020 _a0-283-43180-3
365 _cRS
365 _d1
942 _cENGBK
245 _aTelephony: A detailed Exposition of the Telephone Exchange systems of the British post Office Vol 2
260 _bPitman publishing ltd 39, parker stree
_c1979
_aLONDON
300 _aXII+509
999 _c19440
_d19440