Churchill, Ruel V. <br/><br/>Complex variables and apllications Ruel V. Churchill  -- 2nd ed.  -- New York  McGraw-Hill Book Co.  1960 <br/>ix, 297p.  21cm. <br/><br/> Includes index. <br/><br/><label>Subjects--Topical Terms: </label><br/>Complex-variable functions<br/><br/><label>Dewey Class. No.: </label>GC 515.9 C475 1960