Lee, O-dok, author
Chang Jak iwa BT pyong Sa, 1997
Buku Teks
Lee, O-dok, author
Chang Jak iwa BT pyong Sa, 2000
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Hong, Yun-hwe, author
Daekyobook, 2006
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Lee, O-dok, author
Chang Jak iwa BT pyong Sa, 1999
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Lee, Won-su, author
Bipyeongsa, 1997
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