Siegel, Sidney . Nonparametric statistics for the behavioral sciences / by Sidney Siegel and N John Castellan. - NewDelhi : McGraw-Hill Book , 1988. - xxiii,399p. : ills. charts ; 24cm . Includes index ISBN: 0070573573 NULL Subjects--Index Terms: NONPARAMETRIC STATISTICS Dewey Class. No.: 519.5 / SIE/N