000			00459nam a22001337a 4500
999			_c266390 _d266390
008			210713b1958 ||||| |||| 00| 0 eng d
082			_a621 _bATK
100			_aAtkinson, J
245			_aTelephony _bA detailed exposition of the telephone exchange systems of the British post office
260			_aLondon _bSir Issac Pitman and sons, limited _c1958
300			_axii, 514 p. _c26 cm.
504			_aIt includes bibliographical references and index.
942			_cBK