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| 008 | 210901s2004 xx 000 0 eng d | ||
| 082 | _a510 ORT | ||
| 100 | _aOrton, Anthony | ||
| 245 | 0 | _aLearning mathematics issues, theory and classroom practice | |
| 250 | _a3rd ed. | ||
| 260 |
_aLondon _bContinuum _c2004 |
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| 300 | _a228 | ||
| 650 | _aMathematics | ||
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