title: [Knaus' method. The calculation of female fertile and sterile days].
mesh_terms: D001317:Austria; D005260:Female; D049673:History, 20th Century; D006801:Humans; D007247:Infertility, Female / Q000628:therapy; D012252:Natural Family Planning Methods / Q000266:history*; D010060:Ovulation; D011247:Pregnancy
vernacular_title: Die Methode nach Knaus. Uber die Berechnung der fruchtbaren und unfruchtbaren Tage der Frau.