A treatise on the theory of functions / by James Harkness and Frank Morley. Harkness, James, 1864-1923. Morley, Frank, 1860-1937. Functions. QA331 .H28x 1893b 19 517.5 HAT Includes bibliographical references and indexes. London ; New York : Macmillan, 1893. 1893. 1893 Text ix, 507 p. ; eng