Hits 1-4 within 4 documents
Hits 1-4 within 4 documents
Author(s): Rochlitz, Manfred; Starke, Kurt; Kasek, Leonhard.- 1983. 17p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1988. 46p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1987. 43p.
Author(s): Förster, Peter.- 1988. 16p.