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23دورية أكاديمية
المؤلفون: Lee, ES, Jang, HS, Jung, DJ, Seo, YD Seo, Yu-Deok, Kim, HJ Kim, Hyun-Jung, Youn, SK Youn, Sung-Kie, Lee, SH Lee, Seung-Hoon, Lee, DG Lee, Deog-Gyu
المؤلفون: Lee, ES, Jang, HS, Jung, DJ, Seo, YD Seo, Yu-Deok, Kim, HJ Kim, Hyun-Jung, Youn, SK Youn, Sung-Kie, Lee, SH Lee, Seung-Hoon, Lee, DG Lee, Deog-Gyu