Stock Photo - Children and teenagers, some of whom are wearing hats, seen at a booth featuring children's literature at the book fair in Leipzig, Germany, 23 March 2017. Some 2,400 exhibitors will be presenting their latest publications during the book fair, which is to run until 26 March 2017. Photo: Jens Kalaene/dpa-Zentralbild/ZB | usage worldwide. - Leipzig/Saxony/Germany

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