Han guk jong chi sasang sa: tangun eso haebang kkaji / Han guk, tongyang chong chei sasangsa hakhoe
Baek san seo dang, 2005
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Su, Heung-Ryeol
Jayeonjueui = 자연주의
Ihwayeojadehagyo Chulphan bu, 2006
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Korean thought / edited by International Cultural Foundation
The Si-sa-yong-o-sa , 1982
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Choi, Wan Gee
The traditional education of Korea
Ewha Womans University Press, 2006
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Choi, Wan Gee
The traditional education of Korea
Ewha Womans University Press, 2005
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