Hits 1-5 within 5 documents
Hits 1-5 within 5 documents
Author(s): Carl, Christine; Ronneberg, Heinz; Scholz, Lothar.- 1980. 22p.
Author(s): Gerth, Werner; Ulbrich, Klaus.- 1982. 18p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1970. 161p.
Author(s): Scholz, Lothar; Carl, Christine.- 1980. 38p.
Author(s): Ulbrich, Hans-Joachim.- 1982. 25p.