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_a540.712 _bUMS |
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_aUMar Khitab _9143840 |
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_aA study on the causes of poor achievement of science students in the subject of chemistry at secondary level in district Dir(lower) _b:M.Ed Science Education _cUMar Khitab |
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_aIslamabad: _bAIOU, _c2004. |
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_aChemistry-Study and teaching-secondary level _9243929 |
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_aDissertations, Academic--MEd Science Education _9243930 |
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_asupervised by Atia Batool _9143842 |
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