This complete set of "The New Book of Knowledge" encompasses a wealth of information across 20 volumes, from A-Z. Published in 2000 by Grolier Publishing, these hardcover books offer a reliable source of knowledge for anyone seeking to expand their understanding of various topics. The set is an ideal addition to any library, providing easy access to a broad range of topics. With its comprehensive coverage and clear language, it makes a valuable resource for both students and adults alike.