Tag cloud of DDC level 2 topics for History & geography
* Geography & travel * * History of Asia * * History of North America * * History of other areas * * History of Europe * * Biography & genealogy * * History of South America * * History of Africa * * History of ancient world (to ca. 499) * * History *
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The DDC (Dewey Decimal Classification) divides subjects into 10 topics at level 1. Each level 1 topic has 10 subdivision topics at level 2, and each subdivision is in turn divided into 10 topics at level 3.
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