Fisher, Ronald Aylmer, Sir, 1890-1962 Statistical methods for research workers / Sir Ronald A. Fisher. - 13th ed., rev. - Edinburgh : Oliver & Boyd , 1958. - 356 p. : ill. ; 23 cm. - Biological monographs and manuals; no. 5 . Includes bibliographical references and index. Subjects--Topical Terms: Statistics--------Biometry--------