Hits 21-30 within 55 documents
Hits 21-30 within 55 documents
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1975. 15p.
Author(s): Mehlhorn, Hans-Georg.- 1975. 72p.
Author(s): Voß, Peter.- 1977. 8p.
Author(s): Voß, Peter; Dorn, Harry; Geier, Wolfgang; Ulrich, Gisela; Heinicke, Hans.- 1977. 73p.
Author(s): Voß, Peter; Heinicke, Hans.- 1977. 97p.
Author(s): Voß, Peter.- 1980. 22p.
Author(s): Geier, Wolfgang; Ulrich, Gisela.- 1978. 74p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1979. 50p.
Author(s): Geier, Wolfgang.- 1979. 12p.
Author(s): Ulrich, Gisela.- 1983. 33p.