North korea
 Buku Teks
North korea
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Henthorn, William E.
History of Korea
New York The Free Press 1974
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Woo-Keun, Han, author
History of Korea
The Eul-Yoo, 1971
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North Korea : 2005 and beyond
edited by Philip W. Yun; Gi-Wook Shin
The Walter H. Shorenstein Asia-Pacific Research Center, 2006
 Buku Teks