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| 041 | _aeng | ||
| 082 | _a500.7 SIDR | ||
| 100 |
_aSiddiqui Hasan Mujibul _9222502 |
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| 245 | _aResearch in teaching of science and mathematics | ||
| 260 |
_aNew Delhi _bAshish Publishing _c2004 |
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| 300 | _a309p | ||
| 650 |
_aScience _9222503 |
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