Leftwich, Richard H. The price system and resource allocation / Richard H. Leftwich. - 7th edition. - Hinsdale, Illinoic : Dryden Press, c1979. - xiii, 487 pages : Illustrations ; 23 cm. Includes bibliographies and index. Subjects--Topical Terms: Microeconomics. LC Class. No.: HB171.5 / .L3755 1979 Dewey Class. No.: 338.5/2