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2. American Dry Milk Institute. The Grading of Nonfat Dry Milk and Sanitary and Quality Standards Including Standard Methods of Analysis. Bull. 911 (revised). Chicago, Illinois. 1948.
3. Cherry-Burrell Corporation. Curd Tension Meter. Bull. IP5132-M. Chicago, Illinois. 1955.
4. A Curd Firmness Test for Cottage Cheese;Emmons;J. Dairy Sci.,1959
5. The A-C Test, A Method of Determining the Time for Cutting Cottage Cheese Curd;Emmons;University of Wisconsin, Ext. Circ.,1957