Labys, Walter C. Recent developments in commodity modeling : a World Bank focus / Walter C. Labys - Washington, DC : World Bank (WB) , 1988 - 51p. : ill. ; 28 cm. - Policy, planning, and research working papers, WPS 119 . Includes bibliographical references. Subjects--Topical Terms: Commodity modeling Gov. Doc. Class. No.: UN WB IED ICMD WP-119