Assisted human powered vehicles and velomobiles - wettergeschützte Elektrofahrräder: Proceedings of the 4th Velomobile Seminar Assisted Human ... Interlaken, Switzerland, August 18, 1999

ISBN: 978-3-9520694-1-7

ISBN-10: 3-9520694-1-8

Future Bike Switzerland, J. Hölzle · 1999