The Concise Columbia Encyclopedia, like its best selling companion product, Nexus English SuperÃ¢â?¬Â¢Dictionary, combines features and style unprecedented in a PDA reference tool. With coverage of over 17,000 regularly updated and hyperlinked articles, Columbia is far and away the most complete and timely handheld encyclopedia available. By utilizing the industry's leading compression technology and search engine, Columbia is also the most compact and efficient encyclopedia ever produced. All disciplines are covered, including politics, law, international relations, history, art, sports, geography, science, medicine, folklore and mythology, inventions, architecture, literature, design, and philosophy. Perfect for use in offices, homes, and schools, The Concise Columbia Encyclopedia strikes a perfect balance between breadth and depth.