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2. National Formulary;American Pharmaceutical Association,1975
3. The tocopherol content of food and influencing factors;Bauernfeind;Crit. Rev. Food Sci. Nutr,1977
4. Tocopherols and fatty acids in American diets;Bieri;J. Amer. Dieter. Assoc,1973
5. Edible oil processing;Brekke,1980