http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
United States--west coast, Oregon, Willamette River, Portland to Walnut Eddy
Willamette River, Portland to Walnut Eddy
11th ed., Jul. , 2008, corrected through NM Jul. 05, 2008, LNM Jul. 24, 2008.
1 map : color ; 170 x 37 cm., on sheet 112 x 85 cm.
Relief shown by contours, hachures, and spot heights.