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2. Radiographic studies on the formation of the hen’s egg shell;Bradfield;J. Exp. Biol.,1951
3. Burrows, W. H., and J. P. Quinn, 1939. Artificial insemination of chickens and turkeys. U.S.D.A. Circular No. 525, Washington, D.C. 12 p.
4. Plasma levels of antidiuretic hormone during oviposition in the hen;Douglas;Federation Proc.,1964
5. The influence of time of mating on fertility;Gracewski;Poultry Sci.,1943