Hits 1-4 within 4 documents
Hits 1-4 within 4 documents
Author(s): Müller, Paul J.; Mochmann, Ekkehard.- 1979. 723-728p.
Author(s): Netzker, Wolfgang; Kaftan, Burkhard.- 1977. 16p.
Author(s): Karhausen, Mark; Mochmann, Ekkehard.- 1979. 711-722p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1979. 24p.