Kugohak ui ihae : saerop gethyonaen gugo hak ibmunda
by Choe Chon Sung ... [and others]
Paju-si : Taehaksa, 2008
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Hangugo gyoyuk-eui I he
Guknip Gugowon
Hangung Munhwa sa, 2009
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Jemiitneun hanguko 1-6
Kyobo Book Centre, 2011
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Han'guk munhwa kyoyungnon
Hyŏngsŏl Ch?ulp?ansa, 2010
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Kim, Jin Ho
Wesukineulwihan hanguko munbob
Dosochulphan Park Lee Jeong, 2011
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