Economics of transportation /
Locklin, David Philip, 1897-
Economics of transportation / by D. Philip Locklin - 6th ed. - Homewood, Ill. : R. D. Irwin, 1966 - xii, 882 p. : ill. ; 24 cm.
Includes bibliographical references
Transportation--United States
Railroads--United States
Economics of transportation / by D. Philip Locklin - 6th ed. - Homewood, Ill. : R. D. Irwin, 1966 - xii, 882 p. : ill. ; 24 cm.
Includes bibliographical references
Transportation--United States
Railroads--United States
