Hits 1-3 within 3 documents
Hits 1-3 within 3 documents
Author(s): Kasek, Leonhard; Müller, Margrit; Spitzky, N.; Thiele, Gisela; Ulrich, Gisela.- 1989. 43p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1982. 78p.
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1983. 61p.