A Study on Mastitis Infection Rate and Investigation of Milk Contamination Level by Measuring the Bacteria and Somatic Cell Counts in Gyunggi Area (京畿一圓 乳牛의 乳房炎 感染率과 原乳의 細菌 및 體細胞數 測定에 따른 乳質 汚染度에 관한 연구)
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- Journal of Environmental Health Sciences
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- v.11 no.2
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- pp.41-54
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- 1985