Paul B. Janeczko has written at least 28 books. Their most popular book is Top Secret: A Handbook of Codes, Ciphers and Secret Writing with 1 save with an average rating of -⭐.
2004 • 1 Reader
1999 • 1 Reader • 117 pages
2004 • 1 Reader • 112 pages
1 Reader
2014 • 1 Reader • 52 pages
2017 • 257 pages
2000 • 40 pages
1990 • 168 pages