000 00331nam a2200121Ia 4500
245 _aPrinciples of transmission in telephony
_cM.P. Weinbach
260 _aNew York
_bMacmillan
_c1924
300 _axiv, 303p.
082 _a621.385
_bW42
490 _aEngineering science series
500 _aIncludes index
100 _aWeinbach, M.P.
_d
999 _c28919
_d28919