Template:Ref-Johnson1914b
From Embryology
Johnson FP. A case of atresia ani in a human embryo of 26 mm. (1914) Anat. Rec., vol. 8, pp. 349-353.
Johnson FP. A case of atresia ani in a human embryo of 26 mm. (1914) Anat. Rec., vol. 8, pp. 349-353.