Hits 1-2 within 2 documents
Hits 1-2 within 2 documents
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1988. 131p.
Author(s): Hoffmann, Achim; Starke, Kurt; Schauer, Heinz; Neise, Ulrich; Starke, Uta; Ulbrich, Hans-Joachim; Kasek, Leonhard.- 1978. 118p.