http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Environmental Systems Research Institute (Redlands, Calif.)
4 computer laser optical discs : maps ; 4 3/4 in.
v. 1. World, Europe, Canada, Mexico, United States (Generalized), Southern United States -- v. 2. United States (Detailed) -- v. 3. Western United States -- v. 4. Eastern United States.