000 00276nam a2200121Ia 4500
008 220201s1967 xx 000 0 eng d
082 _a621.86
100 _aCoatesworth,D
245 0 _aTelecommunication for technicians
260 _bNA
_c1967
300 _a137
942 _2ddc
999 _c75001
_d75001