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4 |
|a QA248
|b N37 S5
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| 082 |
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4 |
|a 511.2
|b N277
|
| 110 |
|
|
|a National Council of Teachers of Mathematics
|
| 245 |
|
3 |
|a El Sistema de los Números Racionales
|c / National Council of Teachers of Mathematics; traducción Federico Velasco Coba.
|
| 260 |
|
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|a México :
|b Editorial Trillas,
|c 1970.
|
| 300 |
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|a 116 p.,
|c 23 cm.
|
| 336 |
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|2 rdacontent
|
| 337 |
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|2 rdamedia
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| 338 |
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|2 rdacarrier
|
| 490 |
0 |
|
|a Colección Temas de Matemáticas
|v ; 10
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| 590 |
|
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|a 3a. reimpr. 1974: INGE-V
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| 590 |
|
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|a 14a. reimpr. 1995: INGE-V.
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| 650 |
|
4 |
|a Teoría de los números.
|
| 700 |
1 |
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|a Velasco Coba, Federico.
|9 375104
|
| 942 |
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|c LIBRO
|
