1
2
Published: London [u.a.] : Routledge, 1997.
Book
3
Published: Bonn, 1994.
Book
4
5
6
Published: Frankfurt am Main : Haag + Herchen, 1984.
Book
7
Published: Bielefeld : Kleine, 1993.
Book
8
9
10
11
Published: Bonn : Forschungsinst. der Friedrich-Ebert-Stiftung, Abt. Arbeits- und Sozialforschung, 1992.
Book