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The Encyclopedia Americana is a reference work targeted at young teenagers (grade 8 in the US Educational system). The current, year 2004, 175th anniversary edition has 45,000 articles containing 25 million words and was written by 6,500 contributors. It includes 9,000 bibliographies, 150,000 cross-references, 1,000+ tables, 1,200 maps, and almost 4,500 black-and-white line art and color images. It also has 680 factboxes.
The encyclopedia is produced by Scholastic Library Publishing, a division of Scholastic Inc.