http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Comparative physiographic diagrams of Mount St. Helens, Washington, and Crater Lake, Oregon
Mt. St. Helens, Washington and Crater Lake, Oregon
2 diagrams ; on sheet 76 x 91 cm. folded in envelope 25 x 32 cm.
Miscellaneous field studies (Geological Survey (U.S.)) ; map MF-1403