Waliszko, AnnaHulanicka, BarbaraBielicki, Tadeusz2013-07-242013-07-241987Przegląd Antropologiczny, vol. 53, z. 1-2, 1987, pp. 51-740033-2003http://hdl.handle.net/10593/7388An intriguing social gradient of menarcheal age was found among girls from twelve different social groups defined by father’s occupation and occupational status. Menarcheal age was also found to depend upon parental education and family size.plArtykuł