Template:Ref-West1930
From Embryology
West CM. Description of a human embryo of eight somites. (1930) Contrib. Embryol., Carnegie Inst. Wash. Publ. 407, 21: 25-35.
West CM. Description of a human embryo of eight somites. (1930) Contrib. Embryol., Carnegie Inst. Wash. Publ. 407, 21: 25-35.