This product is a complete set of The Children's Britannica 4th Edition 1988 Volumes 1-20, an encyclopaedia designed for general knowledge and written in English. Published by Encyclopaedia Britannica Inc. in the United States, this hardcover set covers a wide range of subjects suitable for beginners and intermediate readers. With various authors contributing to the content, this comprehensive collection provides a valuable resource for children learning about the world around them.