The MultiGradeMultiLevel-Methodology and its global significance : ladders of learning, variations, scientific horizons : a report / Ralf Girg, Ulrike Lichtinger, Thomas Müller
‡aThe MultiGradeMultiLevel-Methodology and its global significance :
‡bladders of learning, variations, scientific horizons : a report /
‡cRalf Girg, Ulrike Lichtinger, Thomas Müller