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이승희; 윤구영
Koo, Y.Y.; Yong, S.K.; Seung, H.L.
이승희; 김용섭; 윤구영
Yoon, Koo Young; Lee, Seung Hee
Yoon, K.Y.; Lee, S.H.
Yoon, Koo Young; Kim, Yong Seop; Lee, Seung Hee