Hits 1-2 within 2 documents
Hits 1-2 within 2 documents
Author(s): Kaftan, Burkhard; Gerth, Werner; Bertram, Barbara; Ronneberg, Heinz; Kaftan, Burkhard; Netzker, Wolfgang; Fischer, Axel.- 1977. 100p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1977. 86p.