Template:Ref-Mall1914
From Embryology
Mall FP. On stages in the development of human embryos from 2 to 25 mm long. (1914) Anat. Anz., 46: 78-84.
Mall FP. On stages in the development of human embryos from 2 to 25 mm long. (1914) Anat. Anz., 46: 78-84.