Hits 1-3 within 3 documents
Hits 1-3 within 3 documents
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1987. 42p.
Author(s): Bertram, Barbara; Gerth, Werner; Carl, Christine.- 1980. 45p.
Author(s): Wiedemann, Dieter; Lindner, Bernhard; Günther, Cordula; Felber, Holm; Müller, Margrit.- 1986. 149p.