Encyclopedia of Earth
Mineral Industry Surveys
Mineral Publications
Exploring -Resources for Teachers
American Mineralogist Crystal Structure Database
Bibliography of Fossil Vertebrates
National Geologic Map Database
USGS Publication Warhouse
Dictionary of Earth Sciences
Dictionary of Water Terms
Earthquake Glossary
General Dictionary of Geology
Glossary of Glacier Terminology
Glossary of Mining Terms
Glossary of Volcano and Related Terminology
The University of California Museum of Paleontology
Astronomy (OpenStax)