Hits 1-5 within 5 documents
Hits 1-5 within 5 documents
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1972. 82p.
Author(s): Stiehler, Hans-Jörg; Wiedemann, Dieter; Hahn, Jochen.- 1982. 41p.
Author(s): Richter, W.; Schumann, Lothar.- 1972. 45p.
Author(s): Schumann, Lothar; Wiedemann, Dieter.- 1970. 52p.
Author(s): Stiehler, Hans-Jörg.- 1976. 13p.