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Yŏng-il Ko
1926 – 2009
Cheju ŏllon ŭi sŏnbi non'gaek Ko Yŏng-il
Ich'uruk pyŏnhŏn kŏ puyŏmsugwa? 1960-2017
Ko Yŏng-il i pon Cheju ŭi soksal
Taehan Min'guk ŭi sajin ŭl mal hada