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| 035 | _a2088 | ||
| 100 | _aGROZDEV, SAVA | ||
| 245 | 0 | _aFOR HIGH ACHIEVEMENTS IN MATHEMATICS : THE BULGARIAN EXPERIENCE | |
| 260 |
_b, SOFIA _c2007 |
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| 942 | _cBK-JPIP | ||
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_c4216 _d4216 |
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