http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Depths shown by isolines, soundings, and gradient tints.
Title from title screen (viewed on Feb. 13, 2008).
Includes evaluation of survey accuracy, depth gradient diagram, NOS survey index, and location diagram.
Mode of access: Internet from the NGDC NOAA web site. Address as of 2/13/08: http://www.ngdc.noaa.gov/mgg/bathymetry/maps/previews/NG%5F15-6.pdf ; current access via PURL.