At first look, a gargantuan reference book like Business: The Ultimate Resource (Perseus Publishing, www.ultimatebusinessresource.com) seems destined for dust. Billed as a one-stop resource for ideas, practices, and data on every aspect of building companies, managing people, and working, the 2.5 million-word, 2,220-page volume is a cross between a Baedeker for business and Business for Dummies. It’s highly selective and slightly snobbish. And it’s simplistic and lowbrow. But that split personality is part of the book’s charm — and utility. Whether you’re in search of a quick 1/2x, deep thoughts, or definitions and data, this well-designed navigation key will guide you to the appropriate resource.