https://ngmdb.usgs.gov/Prodesc/proddesc_3502.htm
NGMDB Product Description Page
USGS (U.S. Geological Survey) National Geologic Map Database
product description
https://acronym.io/ngmdb-meaning-us-government/
NGMDB Meaning - Meaning of NGMDB U.S. Government
NGMDB meaning - what is the NGMDB meaning in the United States Government?
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https://www.usgs.gov/programs/national-cooperative-geologic-mapping-program/science/national-geologic-map-database-ngmdb?qt-science_center_objects=0&ref=laziestlandlord.com
National Geologic Map Database - NGMDB | U.S. Geological Survey
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