Schulz-Heising, Jochen (1972): Carless People – some approaches to estimate … population without access to car use in Germany. Arbeitspapier für OECD, Environmental Directorate, Paris.
Schulz-Heising, Jochen (1972): Carless People – some approaches to estimate … population without access to car use in Germany. Arbeitspapier für OECD, Environmental Directorate, Paris.