000 00269nam a2200121Ia 4500
008 220201s1970 xx 000 0 eng d
082 _bATK
100 _aAtkinson, J
245 0 _aTelephony vol 1
260 _aLondon
_bPitman pub
_c1970
300 _a509
942 _2ddc
999 _c19465
_d19465