Humphreys, J. F. <br/><br/>
Numbers, groups and codes/ 
J. F. Humphreys, M. Y. Prest. 
 - Cambridge, UK;  New York:  Cambridge University Press,  1989. 
 - xvi, 288 p.:  ill.;  24 cm. 
<br/><br/>Includes bibliographical references (p. 275-282). 
<br/><br/><label>ISBN: </label>0521350840 0521359384 (pbk.) 
<br/><br/><label>LCCN: </label>88039346 //r91 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Group theory.<br/>Number theory.
<br/><br/><label>Dewey Class. No.: </label>512.2