ABSTRACT
Trends in transportation in the United States, by J.H. Permelee. (In Trusts est.. vol. 68, Apr. 1939» PP· 439445)
Costs
Bus, train and plane rate study shows dollar hour travel costs, (in Sale manage.. vol. 41, Aug. 1, 1937» PP· 2021)
City transportation costs justify street improvement: saving can be made by construction of limited ways, by D. G. Beaubien. (in Can, eng.. vol. 74, May 31» 1938, pp. 8-10)
Economics of transportation, by D.P. Losklin. Chicago: Business Publications, 1938. 863p.
