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佐伯 祐弌, 野上 征利 家畜繁殖研究會誌 10 (2), 37-43, 1964
Both the egg and the broiler producers require a continuous supply of commercial chicks as in the best season throughout the year. To comply with their requests, hatching eggs which were assured of …
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清水, 潤三 史学 29 (1), 86-87, 1956-05
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