Hits 1-6 within 6 documents
Hits 1-6 within 6 documents
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1968. 69p.
Author(s): Pfeiffer, U.; Ulbrich, H.-J..- 1975. 20p.
Author(s): Rochlitz, Manfred; Starke, Kurt; Kasek, Leonhard.- 1983. 17p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1988. 46p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1987. 43p.
Author(s): Förster, Peter.- 1988. 16p.