Use-effectiveness and client satisfaction in six centers teaching the billings ovulation method
| Autor: | Klaus, Hanna, Goebel, Joan M., Muraski, Beatrice, Egizio, Mary Therese, Weitzel, Davey, Taylor, Ruth S., Fagan, Mary U., Ek, Kay, Hobday, Kathleen |
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| Zdroj: | In Contraception 1979 19(6):613-629 |
| Databáze: | ScienceDirect |
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