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조원철, 569.96-조66-TD | 경북대학교 대학원 | 1996 569.96-조66-TD,
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Panos London [, ]
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BioMed Central [, ]
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Swets & Zeitlinger, BV [, ]
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Blackwell Publishing Limited [, ]
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Springer - Verlag New York, Inc. [, ]
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World Health Organization [, ]
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World Health Organization [, ]