000 00295nam a2200133Ia 4500
008 220201s1974 xx 000 0 eng d
082 _bDAS
100 _aDas, P.N.
245 0 _aLine Telegraphy
250 _a3
260 _aCalcutta
_bModern book agency
_c1974
300 _a203
942 _2ddc
999 _c21371
_d21371