Graaff, J. de V. Theoretical welfare economics. - Cambridge [Eng.] University Press, [1957] - 178 p. illus. 22 cm. LCCN: 57002863 Nat. Bib. No.: GB57-3328 Subjects--Topical Terms: Economics. LC Class. No.: HB171 / .G66 Dewey Class. No.: 330.1