 The Golden Ratio: The Story of Phi, the World's Most Astonishing NumberThroughout history, thinkers from mathematicians to theologians have pondered the mysterious relationship between numbers and the nature of reality. In this fascinating book, Mario Livio tells the tale of a number at the heart of that mystery: phi, or 1.6180339887...This curious mathematical relationship, widely known as "The Golden... |  | | | Always Be Testing: The Complete Guide to Google Website OptimizerStop guessing, start testing, and enjoy greater success with your website.
If you’re looking for more leads, sales, and profit from your website, then look no further than this expert guide to Google’s free A/B and multivariate website testing tool, Google Website Optimizer. Recognized online marketing guru and New York... |
