http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
2 volumes : maps, tables, charts. ; 27 x 35 cm.
pt. I. Distribution of mineral production.--pt. II. Water power of the world.
At head of title: Department of the Interior. John Barton Payne, secretary. United States Geological Survey. George Otis Smith, director.