Answer:
Dewey Decimal Classification is a patented system of Library Classification developed by Melvil Dewey in 1876. It is also known as 'Dewey Decimal System' based on the name of it's developer. It is also 'The World’s most widely used Library Classification System'. The system is used in 200,000 libraries in at least 135 countries. The system organizes books on library shelves in a specific and repeatable order which makes it easy to find any book and return it to its proper place. The system attempts to organize all knowledge into 10 main classes. The 10 main classes are each further subdivided into 10 divisions, and each division into 10 sections, giving 10 main classes, 100 divisions and 1000 sections.
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