Downie, N. M. 1910- Basic statistical methods [by] N. M. Downie [and] R. W. Heath. - 2d ed. - New York, Harper & Row [1965] - xv, 325 p. illus. 25 cm. - Education for living series . Bibliography: p. 267-268. LCCN: 65017543 Subjects--Topical Terms: Statistics. LC Class. No.: HA29 / .D68 1965 Dewey Class. No.: 310 / DOB 1965