Churchill, Ruel V. <br/><br/>
Introduction to complex variables and applications   
by Ruel V Churchill 
 - New york  MGH  1948 
 - vi,216p. 
<br/><br/> Donated by Prof. S K Chatterjee 
<br/><br/><label>Dewey Class. No.: </label>515.9  / N48;5