Kocherlakota, Narayana Why do different countries use different currencies? / Narayana Kocherlakota & Thomas Krueger - Washington : International Monetary Fund (IMF) , 1998 - 22p. : ill. ; 30 cm. - IMF Working Paper No. 98/17 . Includes bibliographical references. Subjects--Topical Terms: CurrenciesMoney Gov. Doc. Class. No.: UN IMF WP-98/17