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Gheury de Bray, M. E. J. **E5129.220 Exponentials made easy, or the story of ‘epsilon.’ — London. Macmillan & Co., Ltd. 1921. x, 253 pp. Diagrams. 17% cm,, in 8s,
 
y, oe) This card was printed at the Boston Public Library, July 3, 1922.
M4235 — T.r. — Functions. Exponential.