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_aAR-LpUBP _bspa _cAR-LpUBP |
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_aBergvall, Pär _922085 |
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245 | 1 | 0 | _aUnesco pilot project on new methods and techniques in physics teaching |
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300 |
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490 | 0 | _aWS/0765.72-AVS | |
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