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| 037 | _aTextual | ||
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_aFEDL _beng _cFEDL |
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_aeng _2eng |
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_aStern Catherine _9140223 |
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| 245 | 0 | _aChildren discover arithmetic : An introduction to structural arithmetic | |
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_aLondon, UK _bGeorge G Harrap and Co Ltd. _c1953 |
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| 300 | _axxiv,295p | ||
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_cTEXL _h372.7, STE |
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