Template:Ref-Ramsey1937
From Embryology
Ramsey EM. The Lockyer embryo: an early human embryo in situ. (1937) Contrib. Embryol., Carnegie Inst. Wash. Publ. 479, 26: 99-120.
Ramsey EM. The Lockyer embryo: an early human embryo in situ. (1937) Contrib. Embryol., Carnegie Inst. Wash. Publ. 479, 26: 99-120.