Hits 1-3 within 3 documents
Hits 1-3 within 3 documents
Author(s): Straver, Cees J.; Heiden, M. van der.- 1981. 468-472p.
Author(s): Hörning, Karl H.; Krüger, Heidi; Nagel, Rüdiger.- 1981. 248-254p.
Author(s): Knoblauch, Hubert
Source: Soziale Welt , Sonderband, (1988) 6. p.397-411