TY - BOOK AU - Kim,Chae-gûn AU - 김재근 TI - Uri ûi pae: Kujo wa yôksa T2 - Taehak Kyoang Ch'ongsô SN - 8970967729 PY - 1996/// CY - Sôul KW - History -- Chosôn -- History of Technology KW - Science -- Ship Building -- Until Chosôn N1 - index 9 p ER -