Hits 1-10 within 18 documents
Hits 1-10 within 18 documents
Author(s): Gerth, Werner; Ulbrich, Klaus.- 1982. 18p.
Author(s): Spitzky, N..- 1985. 17p.
Author(s): Kasek, Leonhard.- 1985. 21p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1972. 29p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1983. 15p.
Author(s): Thiele, Gisela.- 1987. 15p.
Author(s): Schmidt, Helfried.- 1980. 13p.
Author(s): Gerth, Werner; Kaftan, Burkhard.- 1980. 18p.
Author(s): Gerth, Werner; Burkhardt, Erwin; Bernard, Günter; Bertram, Barbara; Bonus, Hans; Heinrichs, W.; Höpfner, E..- 1970. 62p.
Author(s): Ronneberg, Heinz.- 1976. 54p.