Schleicher-Tappeser, Ruggero (1990): Ecological Regional Development in Rural Areas. The discussion in West Germany and Experiences in the „Bergisches Land“. Freiburg. 37 p. / PDF-EN
dp02 – Ecological Regional Development in Rural Areas
- dp01 – Ökologische Folgekosten des EG-Binnenmarktes
- dp03 – Ökologische Regionalentwicklung. Neun Thesen