Sumner, William Leslie, 1904-1973.
Statistics in school/ W. L. Sumner. - Oxford: Basil Blackwell, 1950. - vii, 225 pages: diagrams; 23 cm.
Bibliography: pages 219-221.
Education --Statistics.
Statistics.
Statistics in school/ W. L. Sumner. - Oxford: Basil Blackwell, 1950. - vii, 225 pages: diagrams; 23 cm.
Bibliography: pages 219-221.
Education --Statistics.
Statistics.