General encyclopedia covering historical and contemporary topics of the world, such as world history, biography, geography, sociology, and more. Includes a world atlas and country statistics comparison tool.
Definitive record of the English language; provides the meaning, history, and pronunciation of 600,000 words - past and present - from across the English-speaking world.
Reference works covering education, environment, sciences, health and wellness, history, law, religion, nation and world, politics, and social sciences.