Nichols, Randall <br/><br/>
Classical Cryptography Course Vol.1 / 
Randall K, Nichols 
 - USA  Aegean Park Press  1996 
 - 301p 
<br/><br/>Simple Substitution (Page-1), Substitution with Variants (Page-26), Substitution with Variants Part II (Page-48), Substitution with Variants Part III (Page-64), Xenocrypt Morphology Part I (Page-84), Xenocrypt Morphology Part II (Page-113), Xenocrypt Morphology Part III (Page-133), Cryptarithms and Hill Cipher (Page-163), German Reduction Ciphers (Page-183), Polyalphabetic Substitution Systems I (Page-217). 
<br/><br/><label>ISBN: </label>0894122630 
<br/><br/><label>Dewey Class. No.: </label>005.82,NIC