Template:Ref-Merkel1894
From Embryology
Merkel F. Human embryos of different ages examined in median sections - a contribution to the mechanics of development. (1894) Dieterichsche Verlags-Buchhandlung, Gðttingen, Germany.
Merkel F. Human embryos of different ages examined in median sections - a contribution to the mechanics of development. (1894) Dieterichsche Verlags-Buchhandlung, Gðttingen, Germany.