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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 Jan 1904 Jahr - 1904- Van de Velde- the first to point out the relationship between the wave-like fluctuations of the BBT and ovulation (1904)
Zugefügt zum Band der Zeit:
NFP History
By
N. Husk
12 Nov 2017
0
0
816
Datum:
1 Jan 1904 Jahr
Jetzt
~ 121 years ago
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