Searches journal articles in the topics of geology and earth sciences.
Coverage in many areas of science. Polk subscribes to approx. 1700 full text journals from 2006 - present.
Science Citation Index
Comprehensive search tool that lets you do a cited reference search
Search in hundreds of encyclopedias, dictionaries, thesauri, quotations, and subject-specific titles, as well as 200,000+ images and audio files, and nearly 100 videos.
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