Tweeten, Luther Agricultural trade : principles and policies / Luther Tweeten. - Boulder : London : Westview Press ; IT Publications, c1992. - xiii, 318 p. : ill. ; 26 cm. Includes bibliographical references and index. ISBN: 1853391581 Subjects--Topical Terms: Produce trade.Agriculture--Economic aspects. LC Class. No.: HD9000.5 / .T84 1992