Classic pages in obstetrics and gynecology. Observationes...de natis è semine genitali animalculis. Antoni Van Leeuwenhoek. Philosophical Transactions of the Royal Society (London), vol. 12, pp. 1040-1043, 1678-1679.
D049670:History, 17th Century; D006801:Humans; D008131:London; D008297:Male; D013094:Spermatozoa