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Author(s): Kroon, H. M. Title: [Influence of ultraviolet rays on milk production] Subject(s): Milk secretion Variation Journal Title Abbreviation: Tschr. diergeneesk. Date of Publication: 1920 Pagination: 56: 965–78. Language: Dutch Type of Resource: Analytic Series/Volume/Page: Series 4/Volume 11/Page 1325