The value of time in passenger transportation: the demand for air travel. - Gronau, Reuben, 1937- (New York, National Bureau of Economic Research; distributed by Columbia University Press, 1970)
A revision of the author's thesis, Columbia University, 1967.
Bibliography: p. [69]-71.
Keywords: Aeronautics, Commercial -- United States -- Passenger traffic; Transportation -- United States -- Passenger traffic