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2. Oven drying vs. freeze drying of excreta in true amino acid availability and true metabolizable energy assay;Dale;Poultry Sci.,1983
3. Multiple range and multiple F-tests;Duncan;Biometrics,1955
4. Ewing, W.R. 1963. Minerals in the poultry ration. In: Ewing, W.R. (Ed.), Poultry Nutrition, 5th edn. The Ray Ewing, Pasadena, CA, pp. 574–709.
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