InstitutionZentralinstitut für Jugendforschung (ZIJ) (1)AuthorSchmidt, Katja (1)Starke, Kurt (1)Starke, Uta (1)Weller, Konrad (1)Date Issued1989 (1)Document Typeresearch report (1)Keywordconfidence (1)DDR (1)Engagement (1)
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