Krishna,b.n.r <br/><br/>
Cryptarithms & Alphametics 
B.N.R Krishna 
<br/><br/><label>ISBN: </label>9788190798181 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>510.76  / KRI