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다국어입력
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Weiss, Thomas George., 349-W432u-안진홍 | Westview Press | 1997 349-W432u-안진홍,
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Westview Press., 326.2-W538p-V.2 | Westview Press | 1989 326.2-W538p-V.2,
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Brokensha, David W, 320.937-B867a | Westview Press | 1988 320.937-B867a,
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Wirth, John D, 953-W799s | Westview Press | 1987 953-W799s,