William Preyer and the prenatal development of behavior.
D000818:Animals; D000831:Animals, Newborn / Q000502:physiology; D001001:Anura; D001522:Behavior, Animal; D004626:Embryology / Q000266:history*; D005260:Female; D005333:Fetus / Q000502:physiology*; D006168:Guinea Pigs; D049672:History, 19th Century; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D014562:Caudata / Q000196:embryology