Hits 1-4 within 4 documents
Hits 1-4 within 4 documents
Author(s): Bisky, Lothar; Förster, Peter; Hennig, Werner; Mühlhausen, Aribert; Pinther, Arnold; Siegel, Ulrike; Müller, Gerhard.- 1969. 186p.
Author(s): Gerth, Werner; Bertram, Barbara.- 1969. 70p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1972. 18p.