Template:Ref-Papanicolaou1933
From Embryology
Papanicolaou GN. The sexual cycle in the human female as revealed by vaginal smears. (1933) Amer. J Anat. 52: 519–637.
Papanicolaou GN. The sexual cycle in the human female as revealed by vaginal smears. (1933) Amer. J Anat. 52: 519–637.