Hits 1-3 within 3 documents
Hits 1-3 within 3 documents
Author(s): Hoffmann, Achim; Starke, Kurt; Schauer, Heinz; Neise, Ulrich; Starke, Uta; Ulbrich, Hans-Joachim; Kasek, Leonhard.- 1978. 118p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1977. 41p.
Author(s): Gerth, Werner; Ronneberg, Heinz.- 1974. 65p.