000 00269nam a2200121Ia 4500
008 160710s1978 xx 000 0 und d
082 _a621.3175 CON
100 _aCONNOR,F. R.
245 _aSIGNALS
260 _bEDWARD ARNOLD
_c1978
300 _a110
942 _2ddc
_cB
999 _c41843
_d41843