Instead, encyclopedias are classified based on their subject matter. You'll find them in various sections of the Dewey Decimal System depending on what they cover. For example:
* General encyclopedias would be found in 030 (General Encyclopedias).
* Encyclopedias focused on a specific subject, like science or history, would be placed in the relevant subject area (e.g., 500 for Science, 900 for History).
So, the Dewey Decimal number for an encyclopedia depends on the specific content it covers.