Jones, Clarence Fielden. Economic geography / Clarence Fielden Jones and Gordon Gerald Darkenwald. - Revised ed. - New York : Macmillan, c 1954. - xxv, 612 p. : ill. ; 24 cm. Includes index. 334 334 Subjects--Topical Terms: Economic geography. Dewey Class. No.: 911.3 / J712e