Consumer attitudes towards organic food and an application of cohort analysis 1984 - 1989 - 1994 ; preliminary results ; paper presented at AIR-CAT 1st plenary meeting, 18. - 21.5. 1995 in Rome - Fricke, Andreas; Alvensleben, Reimar von 1940-2023 (Institut für Agrarökonomie <Kiel> / Lehrstuhl für Agrarmarketing: Arbeitsberichte, 1997)