Hits 1-7 within 7 documents
Hits 1-7 within 7 documents
Author(s): Gerth, Werner; Kasek, Leonhard; Thiele, Gisela; Fischer, Evelyne; Spitzky, N..- 1984. 43p.
Author(s): Thiele, Gisela.- 1985. 20p.
Author(s): Hoffmann, A.; Mehlhorn, Hans-Georg.- 1985. 75p.
Author(s): Gerth, Werner.- 1982. 24p.
Author(s): Gerth, Werner.- 1981. 59p.
.- 1974. 29p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1975. 71p.