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Hits 1-4 within 4 documents
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1986. 123p.
Author(s): Thiele, Gisela.- 1987. 15p.
Author(s): Gerth, Werner.- 1987. 21p.
Author(s): Fischer, Evelyne.- 1985. 21p.