Levin, Jonathan V. The export economies : their pattern of development in historical perspective / Jonathan V. Levin. - Cambridge, Mass. : Harvard University Press, 1960. - xiv, 347 p. : ill. ; 22 cm. Bibliography: p. [315]-334 Subjects--Topical Terms: Commerce. Subjects--Geographic Terms: Developing countries.Peru--Commerce.Burma--Commerce. Dewey Class. No.: 382.6 / LEE 1960