Churchill, Ruel V. <br/><br/>
Complex variables and applications   
by Ruel V. Churchill 
 - New York  McGraw-Hill  1960 
 - ix, 297p. 
<br/><br/><label>LCCN: </label>59-15046 
<br/><br/><label>Dewey Class. No.: </label>515.9  / N601;2