000 00404nam a2200169Ia 4500
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020 _a9780415690157
041 _ager
100 _aHattie, John
245 0 _aVisible learning for teachers:
245 0 _bmaximizing impact on learning
264 _aLondon
264 _bRoutledge
264 _c2012
300 _a286 Seiten
999 _c3691
_d3691