Hits 1-6 within 6 documents
Hits 1-6 within 6 documents
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1978. 8p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1989. 201p.
Author(s): Friedrich, Walter; Klohr, Olof; Förster, Peter.- 1971. 44p.
Author(s): Kasek, Leonhard.- 1977. 8p.
Author(s): Wiedemann, Dieter.- 1989. 62p.
Author(s): Stiehler, Hans-Jörg.- 1989. 30p.