000 00307nam a2200121Ia 4500
008 220201s1992 xx 000 0 eng d
041 _aENG
100 _aI.S: 3039-1980
245 0 _aPRINCIPLES OF TELEGRAPHY
260 _aLONDON
_bTHAMES AND HUDSON PUBLISHING COMPANY
_c1992
300 _a185
942 _2ddc
999 _c58377
_d58377