Template:Ref-RockHertig1942
From Embryology
Rock J. and Hertig AT. Some aspects of early human development. (1942) Amer. f. Obstet. Gynecol, 44: 973-983.
Rock J. and Hertig AT. Some aspects of early human development. (1942) Amer. f. Obstet. Gynecol, 44: 973-983.