Bożiłow, Władimir, Konstanty Sawicki, and Wiesław Kurlej. “The Specificity of Human Foetuses in the Light of Data Concerning Their Mothers”. Anthropological Review 54, no. 1-2 (December 30, 1988): 141–149. Accessed April 29, 2024. https://czasopisma.uni.lodz.pl/ar/article/view/13108.