000 00312nam a2200121Ia 4500
008 220201s1966 xx 000 0 eng d
041 _aENG
100 _aBISWAS, NRIPENDRA N
245 0 _aPRINCIPLES OF TELEGRAPHY
260 _aLONDON
_bTHAMES AND HUDSON PUBLISHING COMPANY
_c1966
300 _a185
942 _2ddc
999 _c44230
_d44230