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| 008 | 991125s1973----mexa----------000-0-spa-u | ||
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_a512.7 _bNAT 1973 |
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| 130 | _aNational council of teachers of mathematics | ||
| 245 |
_aSistemas de numeración para los números racionales/ _cNationalcouncil of teachers of mathematics |
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| 264 |
_aMéxico _bTrillas _c1973 |
||
| 300 | _a59p/23cm. | ||
| 440 | _aColección temas de matemáticas No. 7 | ||
| 650 | 0 | _aNUMEROS,TEORIA DE LOS | |
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_aAC _bG01406 |
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| 905 | _aLibros | ||
| 950 | _c20000814 | ||
| 950 | _c20021023 | ||
| 950 | _c20060109 | ||
| 950 | _c20111027 | ||
| 950 | _c20230914 | ||
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