Statistical Methods for Research Workers (ISBN 0-05-002170-2) is a classic 1925 book on statistics by the statistician R.A. Fisher. It is considered by some to be one of the 20th century's most influential books on statistical methods.
In the second edition of 1928 a chapter 9 was added: The Principles of Statistical Estimation.
Commentary
The March 1951 issue of the Journal of the American Statistical Association contains articles celebrating the 25th anniversary of the publication of the first edition.
A.W.F. Edwards (2005) "R. A. Fisher, Statistical Methods for Research Workers, 1925," in I. Grattan-Guinness (ed) Landmark Writings in Western Mathematics: Case Studies, 1640-1940, Amsterdam: Elsevier.