The Billings Method

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Dr. Evelyn Billings, with her husband, John, refined the Ovulation Method now used all over the world. In this book she describes in detail how to use the Billings method and its scientific basis. Today there are over a million copies in print in 22 languages.

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Dr. Evelyn Billings, with her husband, John, refined the Ovulation Method now used all over the world. In this book she describes in detail how to use the Billings method and its scientific basis. Today there are over a million copies in print in 22 languages.

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Weight 0.65 lbs

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