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| 041 | _aes | ||
| 082 | _aCN.3.1. | ||
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_aMencia V., Gladis C. _9110345 |
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_aOtazú, Miguel Angel _9110342 |
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| 245 | 0 | _aCiencias Naturales 2 Básico | |
| 260 |
_aAsunción, Paraguay _c1997 _bEditorial Don Bosco |
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| 300 | _a243 | ||
| 650 | _aCiencias Naturales / Naturwissenschaft | ||
| 942 | _cMON | ||
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_c1031064 _d1031064 |
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