00635nam a2200217 c 4500001001300000005001500013007000300028008004100031049001400072052001400086056001100100082001600111245006500127250001000192260003100202300003800233525006000271700004800331700002800379950001000407KMO20120237320120127094245ta120103s1990    ulkad         000   kor  0 lEM528296501a564b12-3  a5642501a621.31922100a变電設備와 豫備電源 /d李榮煥,e李位文 共著  a13版  a서울 :b성안당,c1990  a192 p. :b삽화, 도표 ;c26 cm  a권말부록: 고압수전 설비공사의 기초지식1 a이영환,g李榮煥,d1962-0KAC2012011101 a이위문0KAC2012011110 b\4000