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Charles F. Simpson, P. W. Waldroup, C. B. Ammerman, R. H. Harms, Relationship of Dietary Calcium and Phosphorus Levels to the Cage Layer Fatigue Syndrome, Avian Diseases, Vol. 8, No. 1 (Feb., 1964), pp. 92-100
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Simpson et al. (1964) studied this question.
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