European Commission. (1998). Walcyng: How to enhance walking and cycling instead of shorter car trips and to make these modes safer. Luxembourg: Office for Official Publications of the European Communities.

European Commission. Walcyng: How to Enhance Walking and Cycling Instead of Shorter Car Trips and to Make These Modes Safer. Luxembourg: Office for Official Publications of the European Communities, 1998.

European Commission. Walcyng: How to Enhance Walking and Cycling Instead of Shorter Car Trips and to Make These Modes Safer. Luxembourg: Office for Official Publications of the European Communities, 1998.