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Natur Blumen © drubig-photo  - Fotolia

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Natur Blumen © drubig-photo - Fotolia.com

Konferenz Saal © Thaut Images - Fotolia.com

School books with apple on desk © Fabio Balbi - Fotolia.com

schüler stützen sich auf bücherstapel © contrastwerkstatt - Fotolia.com

kluges Schulkind © Picture-Factory - Fotolia.com

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young businesswoman © jayfish - Fotolia.com

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portrait of young man on hammock of Lake © alexandre zveiger - Fotolia.com

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mädchen zeigt Daumen hoch © Picture-Factory - Fotolia.com

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Male Kid Peeking Over a Rustic Wooden Fence © Daddy Cool - fotolia.com

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