Hits 1-4 within 4 documents
Hits 1-4 within 4 documents
Author(s): Carl, Christine; Ronneberg, Heinz; Scholz, Lothar.- 1980. 22p.
Author(s): Spitzky, N..- 1985. 17p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1982. 57p.
Author(s): Fischer, Evelyne.- 1983. 40p.