Hardy, G. H. <br/><br/>
An introduction to the theory of numbers / 
by G.H. Hardy and E.M. Wright. 
 - 4th ed. 
 - Oxford :  Clarendon Press,  [1968]. 
 - xvi, 421 p. 
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Class field theory.