000 00313nam a2200121Ia 4500
008 220201s1964 xx 000 0 eng d
041 _aENG
100 _aROYAL, SIGNALS
245 0 _aHANDBOOK OF LINE COMMUNICATION
260 _aLONDON
_bTHAMES AND HUDSON PUBLISHING COMPANY
_c1964
300 _a905
942 _2ddc
999 _c44405
_d44405