The 2019 edition of The World Book Encyclopedia is your pass to a world of learning and exploration. In 22 hard-cover volumes full of accurate and trustworthy facts, the encyclopedia set provides the most up-to-date information in formats specially-tailored for school-aged learners. Sharpen critical thinking, hone research skills, dive deeply into fascinating subjects, and round-out classroom curricula with expertly-written, unbiased articles. Tens of thousands of index entries make it easy for you to find information wherever it is in the set. Abundant colorful photos, diagrams, charts, tables, and maps supplement the easy-to-read text. Along with the 17,000 articles is useful advice about studying and report writing for elementary through intermediate grades students.