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| 100 | 1 | _aOliva, Alfredo | |
| 222 | _aINFANCIA Y APRENDIZAJE = | ||
| 222 | _bJOURNAL FOR THE STUDY OF EDUCATION AND DEVELOPMENT | ||
| 245 | _aPatrones de comportamiento sexual y contraceptivo en la adolescencia | ||
| 260 | _aMadrid, España | ||
| 300 | _a19-34 | ||
| 362 | 0 | _a1977 no. 77 | |
| 653 | 0 | _aADOLESCENCIA | |
| 653 | 0 | _aANTICONCETIVOS | |
| 653 | 0 | _aCONDUCTA SEXUAL | |
| 653 | 0 | _aSEXUALIDAD | |
| 700 | 1 | _aSerra y Reyes, Lourdes, | |
| 700 | 1 | _ecoaut. | |
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