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| 999 |
_c1566 _d1566 |
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| 005 | 20200901150713.0 | ||
| 008 | 200901b ||||| |||| 00| 0 eng d | ||
| 020 | _a0140124993 | ||
| 040 | _cCML | ||
| 245 |
_aHow to Solve it. _cPolya, G. |
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| 260 |
_aLondon _bPeguin Group _c1990 |
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| 942 |
_2ddc _cBK _e1st Edition _h510 _mPOL |
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