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Hits 1-3 within 3 documents
Author(s): Bacher, Johann; Prosch, Bernhard; Lechner, Birgit; Hermsdörfer, Claudia.- 2002. 27p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1990. 55p.
.- 1990. 191p.