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From Embryology
Foster M. Balfour FM. Sedgwick A. and Heape W. The Elements of Embryology (1883) Vol. 2. (2nd ed.). London: Macmillan and Co.
Foster M. Balfour FM. Sedgwick A. and Heape W. The Elements of Embryology (1883) Vol. 2. (2nd ed.). London: Macmillan and Co.