1. Cryptology : classical and modern /: classical and modern. (2018) Authors: Klima, Richard E; Sigmon, Neil Record Type: Book Extent: 1 online resource, illustrations (black and white) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Cryptology : classical and modern with maplets /: classical and modern with maplets. (2012) Other Names: Klima, Richard E; Sigmon, Neil Record Type: Book Extent: 1 online resource, illustrations View Content: Available online (eLD content is only available in our Reading Rooms) ↗