Steven S. Zumdahl
1907 · Very good
€25
Arthur A. Noyes
1935 · Good
€20
G. H. Hardy, T. W. Körner
1935 · Very good
€25
Lewis Foreman Day
1920 · Fine
€70
Frederick Orpen Bower, Sydney Howard Vines
1903 · Fair
€45
John Dewey
1910 · Fine
€30
Carl David Tolmé Runge
1916 · Fine
€50
Lewis Carroll
1914 · Very good
€25
University of Chicago. Press.
1913 · Good
€50
George A. Cornish
1923 · Very good
€35
Christine P. Dancey, John Reidy
1935 · Good
€55
T. Sundara Rao
1905 · Fair
€15
Claude Irwin Palmer
1912 · Good
€20
Friedrich Fröbel
1913 · Good
€20
Jørgen Peter Müller
1902 · Fine
€155
Balfour Stewart
1919 · Good
€20
Alfred North Whitehead, Bertrand Russell
1911 · Very good
€25
Charles Haddon Spurgeon
1932 · Very good
€145
Wilbur Pardon Bowen
1935 · Good
€50
J. T. Crawford
1923 · Good
€25
René Descartes
1912 · Very good
€85
F. Matthias Alexander
1935 · Fine
€35
Nathan Altshiller-Court
1926 · Fair
€35
Ron Larson
1906 · Good
€45
L. A. Waterbury
1913 · Fine
€45
Matthias Ehrgott
1912 · Very good
€50
Ron Larson
1931 · Fair
€20
Arthur A. Stevens
1925 · Good
€25
Ron Larson, Roland E. Larson
1920 · Fair
€55
Lewis Carroll
1918 · Very good
€80
E. T. Whittaker, G. N. Watson
1920 · Fine
€75
Edward Carpenter
1914 · Very good
€70
Charles Riborg Mann
1916 · Very good
€35
Paul Klee
1935 · Very good
€25
A. S. Neill
1935 · Very good
€45
Otto Jespersen, Otto Jespersen
1904 · Good
€95
Friedrich Fröbel
1919 · Good
€20
Maria Montessori
1931 · Good
€110
William Ledley Vosburgh
1918 · Very good
€90
Otto Zuckerkandl
1922 · Good
€45
W. W. Rouse Ball
1935 · Fair
€15
Henri Poincaré, J. McKeen Cattell
1915 · Good
€50
Robert K. Gable, Marian B. Wolf
1926 · Good
€40
F. S. Macaulay
1922 · Fine
€135
Booker T. Washington
1919 · Fine
€105
Abraham Flexner
1920 · Very good
€30
R. G. Collingwood
1929 · Good
€35
W. W. Rouse Ball
1901 · Fair
€30
Bertrand Russell
1916 · Good
€80
Garrett Putman Serviss
1909 · Good
€45
Florian Cajori
1929 · Good
€65
Rabindranath Tagore
1917 · Very good
€35
Herbert E. Cobb
1935 · Very good
€30
Gertrude Dudley
1909 · Very good
€85
John Dewey, john dewey
1935 · Good
€75
R. Fletcher
1922 · Good
€20
William Archer
1925 · Fair
€55
L. Bautain
1911 · Good
€45
Chancellor, William Estabrook
1908 · Good
€70
Francis Bacon
1930 · Fair
€45