Humphreys, J F; Prest, M Y <br/><br/>
Numbers, groups and codes 

 -  Universities Press, Cambridge  1992 
 - 288 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Groups; Algebra; Mathematics
<br/><br/><label>Dewey Class. No.: </label>PG 512.2  HUM-N