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The World Book Encyclopedia Year Book from 1968 to 1976 is a comprehensive reference book focusing on world history. Published by Field Enterprises, this illustrated encyclopedia features content in English and is geared towards various levels of proficiency, including beginner and advanced. Sold separately for each year, this hardcover book measures 10 inches in length and 7 1/2 inches in width, making it a valuable addition to any collection for those interested in general knowledge and reference materials.