Good starting place for identifying a geologic map for a specific location.
GeoRef contains over 2 million references to geoscience journal articles, books, maps, conference papers, reports, theses and dissertations. Covers the geology of North America from 1785 to the present and the geology of the rest of the world from 1933 to the present. The database includes references to all publications of the U.S. Geological Survey, and US Canadian theses in the geosciences.
the list of what is owned by Penn State Libraries.
The online catalog of materials owned by Penn State Libraries.
Includes books, ebooks, videos, periodicals, maps, music, digitized works, microfilm titles, and other formats that are in the University Libraries' collections.
Note: you will not find articles from newspapers, magazines, or journals in the library catalog.
Coverage: Presently contains about 7 million titles. Updates: Hourly as new records are added or updated.
Use the Keyword function and combine terms to search on a topic then use the subject headings from relevant books for additional search terms.
Write down the call number and location for any book you want. If the item is not at your campus use the "I Want It" button to request it.
For electronic books, click the link under the words "online content" to access the full text