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| 005 | 20210119141217.0 | ||
| 008 | 991018s1980 enka b 10110 eng | ||
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| 035 | _a(DLSU-DASMA)BOOK09119 | ||
| 050 | _aF QA 111 M346 1980 | ||
| 100 |
_aMedina, F A. _937673 |
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| 245 | 0 | _aShort-cuts in arithmetical calculations. | |
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_aManila, Philippines : _bNational Research Council of the Philippines, _cc1980. |
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