Hits 1-3 within 3 documents
Hits 1-3 within 3 documents
Author(s): Buhr, Petra; Leibfried, Stephan; Ludwig, Monika; Voges, Wolfgang.- 1989. 28p.
Author(s): Sackmann, Reinhold; Wingens, Matthias.- 1994. 75p.
Author(s): Wettstein, Markus; Vogel, Claudia; Nowossadeck, Sonja; Spuling, Svenja M.; Tesch-Römer, Clemens.- 2020. 24p.