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| 008 | 991125s1993 cha 000 0 spa u | ||
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| 035 | _aUPN01000045687 | ||
| 049 | _aI | ||
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_aQ163 _bW388 |
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| 245 | 0 | 4 |
_aLos porqués de nuestro mundo / _ctr. María Larios Sanz. |
| 260 |
_aCharlotte, N.C. : _bNational Geographic Society : _bStampley Enterprises, _c1993. |
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| 300 |
_a95 p. : _bil. col. |
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| 440 | 0 | _aExplora y aprende | |
| 500 | _aIntroducción de: [Why in the world?] | ||
| 650 | 2 |
_aCiencia _vLiteratura juvenil _96801 |
|
| 650 | 4 |
_aTECNOLOGIA - _vLITERATURA JUVENIL _922931 |
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| 905 | _aInfantil | ||
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_c45687 _d45687 |
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