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Hangugo hyong thaeron yongu ui saeroun monsaek
Sontong, 2008
 Buku Teks
Lee, Mi-Hye
Hangugo nunbop hangmok kyoyuk yongu: A study of teaching Korean grammar entries
Pakijung, 2005
 Buku Teks
Pak, Jong-dok, 1964-
Hangugo tokhaeron
Shthong, 2008
 Buku Teks
An, Hwi-jun
Hanguk hoehwasa yongu
Sigongsa , 2000
 Buku Teks
Chon, Ho-tae, 1959-
Koguryo kobun pyokhwa yongu
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