Pessary
United States Patent Office: No. 547,625
Pessary
United States Patent Office: No. 29,408
Pessary
United States Patent Office: No. 30,862
PG/53
Eine natürliche Methode zur Feststellung der fruchtbaren und unfruchtbaren Tage durch Zervikalschleim und Speichel
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A doctor´s marital guide for patients
Pille - danach