bn:00059942n
Noun Concept
FR
conscience de la fécondité  méthode de l'ovulation  méthode de l'ovulation de la planification familiale
EN
Natural family planning in which the fertile period is inferred from changes in the character and quantity of cervical mucus; ovulation is marked by an increase in mucus that becomes sticky and then clearer and slippery WordNet 3.0
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