Walker,Elbert A. <br/><br/>
Introduction To Abstract Algebra 
Walker,Elbert A. 
 - New York  Random House  1987 
 - 340  Illustration,index & reference 
<br/><br/><label>ISBN: </label>039435611x 
<br/><br/><label>Dewey Class. No.: </label>512.02  / W1519