Template:Ref-Hertig1945b
From Embryology
Hertig AT. and Rock J. On a normal human ovum not over 7.5 days of age. (1945) Anat. Rec, 91: 281.
Hertig AT. and Rock J. On a normal human ovum not over 7.5 days of age. (1945) Anat. Rec, 91: 281.