00906nam a2200277 c 4500001001300000005001500013007000300028008004100031020003400072049002800106052001700134056001400151082001500165245004200180260004500222300004100267650003400308650004300342650004700385650004300432700002700475880003200502880005200534880003100586950001100617KMO20220127720220302131129ta220111s2021 ickad 000 kor  a9788984179592g93550:c\250000 lEM8156247lEM8156248c201a581.52b22-1 a581.522601a671.52223006880-01a용접공학 /d김정혁 저 6880-02a인천 :b원창출판사,c2021 a5, 425 p. :b삽화, 도표 ;c26 cm 8a용접[鎔接]0KSH1998002033 8a가스 용접[--鎔接]0KSH1998003993 8a저항 용접[抵抗鎔接]0KSH1998022940 8a아크 용접[--鎔接]0KSH19980020321 6880-03a김정혁4aut006245-01/(BaYongjeop gonghak 6260-02/(BaIncheon :bWonchang Chulpansa,c20211 6700-03/(BaGim, Jeonghyeok0 b\25000