Durége, Heinrich. 1821- **E 5115.31 Elements of the theory of functions of a complex variable, with especial reference to the methods of Riemann. Authorized trans. from the 4th Ger- man ed., by George Egbert Fisher and Isaac J. Schwatt. Phila, Fisher &S. 1896. xiii, 288 pp. 8°,
-Functions.-Riemann, Georg Friedrich Bern- hard. -Fisher, Geo. eae Egbert, tr. -Schwatt, Isaac J. We