Template:Ref-Keibelchapter2-1910
From Embryology
Keibel F. II. Fertilization in Keibel F. and Mall FP. Manual of Human Embryology I. (1910) J. B. Lippincott Company, Philadelphia.
Keibel F. II. Fertilization in Keibel F. and Mall FP. Manual of Human Embryology I. (1910) J. B. Lippincott Company, Philadelphia.