1. American Dry Milk Institute, Inc. The Grading of Nonfat Dry Milk Solids. Bull. 911 (Rev.) 57 pp. illus. 1948.
2. American Public Health Assn. Standard Methods for the Examination of Dairy Products, par. 9.17. 9th ed., New York, 1948.
3. A Filtration Method for Determining Sediment in Roller Process Nonfat Dry Milk Solids;Strobel;J. Dairy Sci.,1951
4. Strobel, D. R., and Babcock, C. J. Scorched Particle Standards for Dried Milks Developed, USDA, PMA, Dairy Branch. 6 pp. 1950.
5. United States Department of Agriculture. Scorched Particle Standards for Dry Milks. Sepia photograph, USDA, 1951.