00589na  a2200181   4500001001300000005001500013008004100028024002700069035002700096100001400123370004800137372004000185373002300225374005700248377001400305400001800319670007000337KAC2018L275920220706125500181016 b aznnnaabn          fa aaa      7 a00000004724928762isni  a(KISTI)ADPER68010331791 a장동두  c한국(국명)[韓國]0KSH20000101452nlsh  a철도[鐵道]0KSH19980045772nlsh  a한국철도공사  a연구원(연구자)[硏究員]0KSH19980377142nlsh  l한국어1 aJang, Dongdoo  a한국과학기술정보연구원(KISTI)uhttps://www.kisti.re.kr