Hits 1-3 within 3 documents
Hits 1-3 within 3 documents
Author(s): Meuser, Michael; Nagel, Ulrike.- 1989. 29p.
Author(s): Feldhaus, Michael; Huinink, Johannes.- 2006. 24p.
Author(s): Schupp, Jürgen; Frick, Joachim; Kaiser, Lutz; Wagner, Gert.- 1999. 93-118p.