Hits 1-3 within 3 documents
Hits 1-3 within 3 documents
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1986. 214p.
Author(s): Wittenberg, Reinhard; Rothe, Thomas; Proske, Sandra; Wenzig, Claudia; Wenzig, Knut.- 1999. 82p.
Author(s): Neise, Ulrich.- 1977. 43p.