Template:Ref-Keibelchapter1-1910
From Embryology
Keibel F. I. The Germ Cells in Keibel F. and Mall FP. Manual of Human Embryology I. (1910) J. B. Lippincott Company, Philadelphia.
Keibel F. I. The Germ Cells in Keibel F. and Mall FP. Manual of Human Embryology I. (1910) J. B. Lippincott Company, Philadelphia.