Founded in 1997, BookFinder.com has become a leading book price comparison site:
Find and compare hundreds of millions of new books, used books, rare books and out of print books from over 100,000 booksellers and 60+ websites worldwide.
Frame of the Universe:
Durham and Purrington approach the history of the universe by exploring the frontiers of physics, while maintaining a long-standing interest in astronomy and cosmology. They stress that man can not fully understand himself until he understands the universe, of which he is a part.[via]