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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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25 oct 1924 año - First precise and commonly accepted indications of the female fertility period was detected The rhythm method before this was based on the belief that: 1 ovoluation was during menstruation or just straight before 2
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Unit A contraception
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19 oct 2017
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fecha:
25 oct 1924 año
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~ 101 years ago
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