http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Petroleum exploration plays and resource estimates, 1989, onshore United States
Region 1, Alaska, Region 2, Pacific Coast
1 online resource (v, 138 pages) : illustrations, maps (some color).
Petroleum exploration plays and resource estimates, 1989, onshore United States. Region 1, Alaska, Region 2, Pacific Coast
U.S. Geological Survey bulletin ; 2034-A