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Dating back to 1669 for North America and 1933 for the rest of the world, GeoRef includes all publications of the US Geological Survey and adds 100,000 records every year.
GeoRef Quick Facts:
• Over 3.4 million abstract records
• Coverage of North America: 1669-present
• Coverage of the rest of the world: 1933-present
• Over 3,500 journals, books, maps, conference papers, reports, and theses
• Includes all publications of the US Geological Survey plus masters’ theses and doctoral
dissertations from US and Canadian universities
• 100,000 new records added annually





