Hits 21-27 within 27 documents
Hits 21-27 within 27 documents
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1976. 24p.
Author(s): Kasek, Leonhard; Schauer, Heinz; Hoffmann, A.; Starke, Kurt.- 1975. 183p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1979. 12p.
Author(s): Weiss, Volkmar.- 1979. 33p.
Author(s): Friedrich, Walter; Klohr, Olof; Förster, Peter.- 1971. 44p.
Author(s): Förster, Peter.- 1976. 77p.