Churchill, Ruel V. (Ruel Vance), 1899-1987 <br/><br/>
Complex variables and applications /    
Ruel V. Churchill, James War d Brown. 
 - 4th ed. 
 - New York :   McGraw-Hill,   c1984. 
 - x, 339 p. :    ill. ;    24 cm. 
<br/><br/>Includes bibliographical references ( p. 323-324) and index. 
<br/><br/><label>ISBN: </label>0070108730 
<br/><br/><label>Dewey Class. No.: </label>515.9