El Método Billings : el uso del indicador natural de la fertilidad para lograr o evitar el embarazo
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| Format: | Book |
| Published: |
Madrid :
Palabra,
2016.
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| Edition: | 1a. ed. |
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| Physical Description: | 186 p. ; 24 x 16 x 2 cm. |
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| ISBN: | 978-84-9061-430-3 |