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In a library, classification refers to the organization of books and other materials according to a systematic scheme, such as the Dewey Decimal Classification system or the Library of Congress Classification system. These systems use a specific set of numbers or letters to represent different subjects or categories, and the books in a library are assigned call numbers based on their classification. This allows library patrons to locate specific materials easily by looking up the call numbers in the library’s catalog or on the shelves. Classification helps to create a logical and organized structure for the library’s collection, making it easier to find and access the materials.