Lewis, Edward Erwin, 1900- Methods of statistical analysis in economics and business. [electronic resource] . — Boston, : Houghton Mifflin, [1953]. — 686 p. : illus. 25 cm. LCCN: 52014724 Subjects--Topical Terms: Statistics. LC Class. No.: HA29 / .L43 Dewey Class. No.: 311.2