http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Geologic map of the Fort Peck area, Montana, showing structure contours on top of the Judith River formation
Fred S. Jensen; prepared as part of the Department of Interior's program for the development of the Missouri River Basin.
"Missouri River Basin geologic mapping and mineral resource investigations."
Open-file report (Geological Survey (U.S.)) ; 52-83