Fertility indicator
Patent 4.151.831
Fertility period indicator
Patent 2.769.593
Fertility Regulation and the Public Health
Selected Papers of Christopher Tietze
Finil
zur vaginalen Desinfektion
First World Congress on Fertility and Sterility
New York City, May 25-31, 1953
flexi-T
"Langlebig, zuverlässig und hormonfrei"
Flirt Guide für Frauen