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Hits 1-3 within 3 documents
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1977. 41p.
Author(s): Rockmann, Ulrike; Leerhoff, Holger; Butler, Jeffrey.- 2019. 6p.
Author(s): Rockmann, Ulrike.- 2020. 32p.