Buchman Johannes A <br/><br/>
Introduction to cryptography 
Buchman Johannes A 
 - 2nd 
 - New Delhi  Springer  1935 
 - xvi,335 
<br/><br/><label>ISBN: </label>8181282323 
<br/><br/><label>Subjects--Topical Terms: </label><br/> cryptography
<br/><br/><label>Dewey Class. No.: </label>005.82 BU-I