Cashin, Paul How persistent are shocks to world commodity prices? / Paul Cashin, Hong Liang, C. John McDermott - Washington : International Monetary Fund (IMF) , 1999 - 54p : ill. ; 30 cm. - IMF Working Paper No. 99/80 . Includes bibliographical references. Subjects--Topical Terms: Commodity pricesPrice stabilization Gov. Doc. Class. No.: UN IMF WP-99-80