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다국어입력
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Bandyopadhyay, R., | Pergamon | 2008 ,
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Chickering, Arthur W., 373-J84n | Jossy-Bsss | 1991 373-J84n,
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Ramiah, B.K., 532.3-R173s | A.A. Balkema | 1990 532.3-R173s,
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Enright, D J., 840.9-E59e | Oxford University Press | 1981 840.9-E59e,