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|a 0521390257
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| 040 |
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|a Sistema de Bibliotecas de la Universidad Nacional de Costa Rica
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| 082 |
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|a 615.766
|b S291s
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| 245 |
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|a Scientific basis of fertility regulation :
|b contraception and mechanisms of endometrial bleeding :
|b proceeding of a symposium /
|c Organized by the Special Programme of Research Training in Human Reproduction of the World Health Organization ; edited by C. D'Arcangues...
|h [et al.]
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| 250 |
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|a 1
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| 260 |
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|a [S.l.] :
|b Cambridge : University Press ,
|c 1990
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| 300 |
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|a x, 547 páginas :
|b ilustraciones ;
|c 24 cm.
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| 650 |
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|a MENSTRUACIÓN
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| 650 |
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|a ANTICONCEPTIVOS
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| 700 |
1 |
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|a D'Arcangues, Catherine, ed.
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