Fisher, Ronald Aylmer Sir Statistical methods for research workers. - 13th ed., rev. - New York Hafner Pub. Co. 1958. - xv, 356 p. Includes index. Bibliography: p. 340-351. LCCN: bvc00001881 Subjects--Topical Terms: StatisticsBiometry LC Class. No.: HA29 / .F5 1958 Dewey Class. No.: 519.5