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Online Encyclopedias

Check this guide to find encyclopedias. Most are available online, but a few are print copies in the ISU Library. Some are general encyclopedias; some are specialized, focused on specific subject areas.

Encyclopedias for geology:

Encyclopedia of Earth
EoE is a database about the Earth, its natural environments, and their interaction with society. Free, expert-reviewed collection of content contributed by scholar/professionals who collaborate and review each other's work.

U*X*L Encyclopedia of Landforms and Other Geologic Features
"The physical and geological aspects, structure, and features of 48 of the earth's landforms - what they are, how they look, how they were created, how they change over time, and major geological events associated with them."--Website

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