Humphries, John <br/><br/>
Numbers, groups and codes 

 - 2nd Edition 
 - Cambridge  Cambridge University Press  2014 
 - xvi,338p. 
<br/><br/><label>ISBN: </label> RS 4967.28 (USD 68.99) 
<br/><br/><label>Source: </label> RS 4967.28 (USD 68.99) 
<br/><br/><label>Dewey Class. No.: </label>512.22 HUM