Hits 1-3 within 3 documents
Hits 1-3 within 3 documents
Author(s): Beland, Henry; Denecke, Peter; Friedrich, Hannes.- 1981. 195-199p.
Author(s): Dittmann, Klaus; Siegrist, Johannes; Matschinger, Herbert; Rittner, Karin; Weber, Ingbert.- 1981. 206-214p.
Author(s): Brück, Wolfgang.- 1988. 10p.