NEW ebook handbook on the Billings Ovulation Method®:

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This handbook on the Billings Ovulation Method® is the perfect resource for women and couples wanting to use the Method to achieve or postpone pregnancy and for women wanting to know more about their own unique fertility patterns. It explains how to observe and chart and the application of the Rules for all phases of reproductive life. If you are using the Billings Ovulation Method® to understand and manage your fertility, this is essential reading. Available as a PDF e-book in English and Vietnamese.