Template:Ref-Hertig1946
From Embryology
Hertig AT. and Rock J. On a human blastula recovered from the uterine cavity 4 days after ovulation. (1946) Anat. Rec. 94: 469.
Hertig AT. and Rock J. On a human blastula recovered from the uterine cavity 4 days after ovulation. (1946) Anat. Rec. 94: 469.