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11 St. 44 Min, 1 Jan 1968 Jahr - 1968-Marshall- first prospective study/field trial of an NFP method (BBT method)

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NFP History

ByN. Husk
12 Nov 2017

Datum:

11 St. 44 Min, 1 Jan 1968 Jahr
Jetzt
~ 56 years ago
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