I can't say enough good things about Dover Publications. I've done business with them for years, and will continue to do so. Take a look at their site.This book, The Nature and Power of Mathematics, by Donald M.Davis, is just amazing. Davis begins in familiar territory, covering Greek mathematics (including π), then moving into Non-Euclidean Geometry and other topics, including a very lucid treatment of cryptography.
A bargain at $19.95. Very readable, well made, with nice illustrations.
Patrick Jost
