00703nam a2200229 c 4500001001300000005001500013007000300028008004100031049001400072052002000086056001700106082001800123245006100141260004100202300004600243504002400289650004200313650004200355650003400397710002500431950001700456KMO20213797320210715150526ta210322s1985    ulkacd        000   kor  0 lEM791579701a326.40911b21-1  a326.409112601a384.0951922300a開局百年略史 :b1885~1985 /d中央電信局 [편]  a서울 :b中央電信局,c1985 序  a270 p. :b삽화, 도표, 초상 ;c27 cm  a참고문헌 수록 8a전신(통신)[電信]0KSH1998030189 8a전보(통신)[電報]0KSH1998019701 8a역사[歷史]0KSH1998005946  a중앙전신국4aut1 a가격불명