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International developments in research on extended education : perspectives on extracurricular activities, after-school programmes, and all-day schools / Sang Hoon Bae, Joseph L. Mahoney, Sabine Maschke, Ludwig Stecher (eds.) . Opladen ; Berlin ; Toronto : Verlag Barbara Budrich, 2020 . 306 stran . ISBN 978-3-8474-2335-5 (vázáno) .   [1, z toho volných 0]