Billings International Website
World Organisation of Ovulation Method Billings (WOOMB) International -
The Company that promotes the authentic Billings Ovulation Method
AFLC develops, promotes and co-ordinates Marriage and Family Life Programs.
A Catholic Programme on Relationships for Young People.
Natural Womanhood is a non-profit corporation dedicated to the promotion of fertility charting, as a way to promote disease prevention, self-knowledge, relational intimacy, and effective family planning.
Examining the critical importance of a couple's emotional health and well-being and its impacts on conception.