Hits 1-4 within 4 documents
Hits 1-4 within 4 documents
Author(s): Lindner, Bernhard; Stiehler, Hans-Jörg.- 1986. 33p.
Author(s): Stiehler, Hans-Jörg.- 1987. 41p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1985. 117p.
Author(s): Friedrich, Walter.- 1974. 142p.