Travel Cost Models at the Urban Scale. Alexander J. Darragh,George L. Peterson,and John F. Dwyer. Journal of Leisure Research,vol. 15,no. 2,1983,pp. 89-94. National Recreation and Park Association,3101 Park Center Drive,Alexandria,Virginia 22302. $17 annual subscription

Travel Cost Models at the Urban Scale. Alexander J. Darragh,George L. Peterson,and John F. Dwyer. Journal of Leisure Research,vol. 15,no. 2,1983,pp. 89-94. National Recreation and Park Association,3101 Park Center Drive,Alexandria,Virginia 22302. $17 annual subscription