http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Defense Mapping Agency public sale nautical charts and publications
Scandinavia, Baltic, and the former Soviet Union
Catalog of maps, charts, and related products. Part 2, Hydrographic products
Defense Mapping Agency Combat Support Center (U.S.).
NOAA Distribution Branch, N/CG33, National Ocean Service, Riverdale, Md. 20737-1199