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adolescent (2) |
art (1) |
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cultural behavior (2) |
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demographische Faktoren (1) |
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adolescent (2) |
art (1) |
attitude (1) |
behavior (1) |
cultural behavior (2) |
DDR (2) |
demographic factors (1) |
demographische Faktoren (1) |
Einstellung (1) |
Freizeit (1) |