84 MANUAL OF DAIRY CATTLE BREEDING 



day records of Holstein-Friesian cattle, Annual Report of the Maine 

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Gowen, John W. 1923. Studies in milk secretion XIV. The effect of age 

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 Registry cattle, Annual Report of the Maine Agricultural Experiment 

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Brody, Samuel, Ragsdale, Arthur C, and Turner, Charles W. 1923. 

 The rate of growth of the dairy cow. IV. Growth and senescence as 

 measured by the rise and fall of milk secretion with age, Jour. Gen. 

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