Steel, Robert G.D. Principles and procedures of statistics : a biometrical approach / Robert G.D. Steel, James H. Torrie. - 2nd ed. / - Auckland : McGraw-Hill , 1980. - xxi,633 p. : ills. ; 23 cm . includes index ISBN: 0070665818 8.50 Subjects--Topical Terms: MATHEMATICAL STATISTICS Dewey Class. No.: 519.5 / STE/P