Siegel, Sidney, 1916-1961. Nonparametric statistics for the behavioral sciences / Sidney Siegel. - New York : McGraw-Hill, 1956. - 312 p. : illus. ; 24 cm. - McGraw-Hill series in psychology . Subjects--Topical Terms: Experimental design.Social sciences--Research.Nonparametric statistics. Dewey Class. No.: 311.2 / SIN 1956