Hits 1-4 within 4 documents
Hits 1-4 within 4 documents
Editor(s): Zentralinstitut für Jugendforschung (ZIJ).- 1983. 39p.
Author(s): Müller, Harry.- 1980. 13p.
Author(s): Heuer, Jan; Hils, Sylvia; Richter, Anika; Schröder, Brunhild; Sackmann, Reinhold.- 2005. 35p.
Author(s): Bertschek, Irene; Bonin, Holger; Janßen, Rebecca; Wenzel, Tobias; Klump, Sebastian.- 2021. 45p.