Lange, Andre. <br/><br/>
Treatise on cryptography / 
Andre Lange and E.A. Soudart. 
 - Laguna Hills, Calif. :  Aegean Park Press,  c1981. 
 - xvi, 168 p. ;  28 cm. 
 - A Cryptographic series ;  36 .
<br/><br/>Part.1 Historical Exposition (Page-1), Part.2 Cryptography by Letters and Numericals (Page-39), Part.3 Cryptography by signs and Symbols (Page-111). 
<br/><br/><label>ISBN: </label>0894120557 (pbk.) 
<br/><br/><label>LCCN: </label>97178158  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cryptography.
<br/><br/><label>Dewey Class. No.: </label>652.8,LAN