To add more products to your cart you must first abandon your PayPal Express Checkout. You will be able to commence a new PayPal Express Checkout and re-verify when you are ready. Would you like to Abandon & Add to Cart (and abandon PayPal Express Checkout) or Checkout?
To view similar items click here.
Cryptography: The Science of Secret Writing
Laurence D. Smith
Publisher: Dover PublicationsFormat: Paperback
Readers interested in secret writing will find “Cryptography” an excellent elementary introduction to this fascinating subect. Here is a concise and simple explanation of transposition and substitution ciphers, codes, and their solutions. More than 150 prioblems provide practical application as well as tests of skill and ingenuity.
GST Note: GST is included in the price of this item. GST is included in the freight.
Delivery time frames will depend on your location, please check the shipping calculator to see an estimate of when you can typically expect to receive your goods based on your postcode.