000 00286nam a2200121Ia 4500
008 220201s1974 xx 000 0 eng d
082 _a621.382
_bDAS
100 _aP.N. dAss
245 0 _aLine telegraphy
260 _aCalcutta
_bModern book agency
_c1974
300 _a203
942 _2ddc
999 _c22699
_d22699