Appendix: The Playfair Cipher
From Author Wars - https://authorwars.com/books/appendix-the-playfair-cipher-1661880.html
Overview:
- Title: Appendix: The Playfair Cipher
- Author: uncredited
- Year: 2000
- Type: Essays
Editions/Publications:
- Unknown. Arthur C. Clarke's Venus Prime 2 (Unknown, uncredited, ibooks, ISBN-10: 0671038990, $14.00, x+282+12 pages, Trade Paperback, Novel)