Samuelson, Paul A. 1915-2009. Foundations of economic analysis / Paul A. Samuelson. - Enl. ed. - Cambridge, Mass. ; London, England : Harvard University Press, 1961. - xii, 447 p. ; 22 cm. - Harvard economic studies ; v. 80 . Includes index. LCCN: 82021304 Subjects--Topical Terms: Economics, Mathematical. Dewey Class. No.: 330.0151 SAM