This is an excellent, scholarly alternative to Wikipedia. It allows you to search back-of-the-book indexes and article titles in thousands of reference books owned by Camden-Carroll Library. If it is an e-book you can access it. If it is a print book you can find its call number and then the volume and page numbers for your topic.
Selected E-Book Encyclopedias
Encyclopedia of Geology - 2005Covers all aspects of geology including earth history, earth materials, surface processes, regional geology, economic geology, engineering geology, petroleum geology, geochemical and mineral exploration, and the history of geology.
Environmental Encyclopedia - 2011Provides in-depth, worldwide coverage of environmental issues. Each article is written in a nontechnical style and provides current status, analysis, and suggested solutions whenever possible.