Hits 1-3 within 3 documents
Hits 1-3 within 3 documents
Author(s): Mühlhausen, Aribert; Schmidt, Georg; Süße, Heinz; Starke, Kurt.- 1969. 125p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1968. 60p.
Author(s): Förster, Peter; Hennig, Werner; Müller, Harry; Schmidt, Georg; Schumann, Lothar; Süße, Heinz.- 1969. 147p.