http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Metallic mineral resources map of the Prince Rupert quadrangle, Alaska
Relief shown by contours and spot heights. Depths shown by isolines.
"Base by U.S. Geological Survey, 1955,-59."
Includes bibliographical references, key to lode deposits, and quadrangle index map.
Miscellaneous field studies ; map MF-437