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In page Erich Kästner:
"Kästner followed this success with Pünktchen und Anton (1931) and Das fliegende Klassenzimmer (1933). Walter Trier's illustration significantly contributed to the books' overwhelming popularity. Das fliegende Klassenzimmer has been adapted for the cinema several times: in 1954 by Kurt Hoffmann, in 1973 by Werner Jacobs and in 2003 [de] by Tomy Wigand [de].
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