LDR 00575nam a2200181zu 4500 008 090205n chi d 110 2 _612 _aCh'esinbu Chôn'gi T'ongsin Yôn'guso 110 2 _612 _a체신부 전기통신연구소 245 _602 _aChônki t'ongsin yôn'guso po 245 _602 _a전기통신연구소보 _b 260 _aSôul 650 _aJournal -- Technology -- Electrionics -- ROK 866 0 _a30.1969:9 946 _a 947 _a34879 001 IFS60503 999 _c332117 _d332117 952 _z34879 _70 _c1 _40 _00 _660000127 _9196745 _yBOOK _10 _o6000/0127 _d2009-05-14 _aIFS