http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
structure and stratigraphy of Gravina and Revillagigedo Islands, Alaska
1 online resource (22 unnumbered pages) : illustrations, maps.
Title from title screen (viewed September 17, 2014).
Gravina Island (Ketchikan Gateway Borough)
Professional paper (Geological Survey (U.S.)) ; no. 120-D
Shorter contributions to general geology ; 1918