Title
Intercity passenger demand models : state-of-the-art / [David T. Hartgen and Gerald S. Cohen] ; prepared by the Planning Research Unit, Planning and Research Bureau, New York State Department of Transportation, in cooperation with Union College Transportation Program, Schenectady, N.Y.
Published
Washington, D.C. : U.S. Dept. of Transportation, Research & Special Programs Directorate, Office of University Research, [1977-