000 00335nam a2200145Ia 4500
008 170101s1964 xx 000 0 und d
082 _a621.382 B76P
100 _aBISWAS, N.N
245 0 _aPrinciples of telegraphy
260 _bBombay
_c1964
300 _ax,185p
650 _aTELEGRAPHY
653 _aTELEGRAPHY
942 _2ddc
_cB
999 _c13910
_d13910