Sampson, Roy J. Domestic transportation : practice, theory, and policy / Roy J. Sampson, Martin T. Farris. - Boston : Houghton Mifflin, c1975. - xv, 521 p. : ill. 25 cm. Includes bibliographies and index. ISBN: 395188644 Subjects--Topical Terms: Transportation;Freight and freightage Universal Decimal Class. No.: 380.5