000 00278nam a2200121Ia 4500
008 220201s1962 xx 000 0 eng d
082 _a384.1
_bDAS
100 _aDas, P.N.
245 0 _aLine Telegraphy
260 _aCalcutta
_bM.B.A. Press
_c1962
300 _a179
942 _2ddc
999 _c13728
_d13728