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| 101 | 0 | _aeng | |
| 102 | _aGB | ||
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_aChanges in the age distribution of parents, 1940-1980 _fDavid J. Eggbeen, Peter Uhlenberg |
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| 461 | 1 |
_vVol. 10, nº 2 (June 1989), p. 169-188 _tJournal of family issues|. - London. - ISSN 0192-513X _061000 |
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| 606 | 1 | _aFecundidade | |
| 606 | 1 | _aPais | |
| 606 | 1 | _aIdade | |
| 675 | _a314.3 | ||
| 700 | 1 |
_aEggbeen _bDavid J. |
|
| 701 | 1 |
_aUhlenberg _bPeter |
|