Complex variables and applications / Ruel V. Churchill, James W. Brown [and] Roger F. Verhey. Churchill, Ruel V. (Ruel Vance), Brown, James Ward, jt. aut. Verhey, Roger F., jt. aut. Functions of complex variables. QA331 .C524 1974 517.8 CHC Includes index. Bibliography: p. [311]-313. New York : McGraw-Hill, c1974. c1974. 1974 Text x, 332 p. : eng