Hits 11-15 within 15 documents
Hits 11-15 within 15 documents
Author(s): Richter, W.; Schumann, Lothar.- 1972. 45p.
Author(s): Schumann, Lothar; Wiedemann, Dieter.- 1970. 52p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1970. 44p.
Author(s): Hahn, Jochen.- 1985. 20p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1980. 28p.