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1Ch'uksan kisul yŏn'gu nonmunjip.畜產技術硏究論文集.Published 1997Subjects: “...Livestock Periodicals. http://id.loc.gov/authorities/subjects/sh2008107061...”
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2Published 1992Subjects: “...Veterinary medicine Periodicals. http://id.loc.gov/authorities/subjects/sh2008113206...”
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3Published 1993Subjects: “...Veterinary medicine Periodicals. http://id.loc.gov/authorities/subjects/sh2008113206...”
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4