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[2]
CUSTER EW, 1958, MISSISSIPPI AGR EXPT, V561
[3]
HOLLAND B. K., 1951, MILK DEALER, V40, P92
[4]
MAYNARD L. A., 1954, Journal of Dairy Science, V37, P624, DOI 10.3168/jds.S0022-0302(54)91306-5
[5]
WECKEL K. G., 1952, Milk Dealer, V41, P56