: If you have the .7z file, look for a readme.txt or .xml metadata file inside. These files typically list the official citation, the authoring body, and the "paper of record" for the dataset. Common Regions Using This Naming Convention
: The Spanish National Geographic Institute often uses similar coding for their 1:25,000 or 1:50,000 scale topographic series. TOPO002d991.7z
: Many European and South American mapping agencies use "TOPO" prefixes for their digital elevation models (DEM) or vector data. : If you have the