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2. American Association of Cereal Chemists: Cereal Laboratory Methods compiled by Committee on Revision. American Association of Cereal Chemists Majel M. MacMasters, Chairman. 7th edition. St. Paul 4 Minnesota USA: American Association of Cereal Chemists 1962.
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5. Association of Vitamin Chemists: Methods of Vitamin Assay. New York: Interscience Publishers 1951.