http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Sailing directions (planning guide) for the Arctic Ocean
National Geospatial-Intelligence Agency.
Issued for use in conjunction with other Sailing directions (enroute), which are listed in the Preface.
Each edition supersedes previous edition.
Issued by: National Imagery and Mapping Agency, 2002- ; by: National Geospatial-Intelligence Agency, <2011->.
Pub. (United States. Defense Mapping Agency. Hydrographic/Topographic Center) ; 180
Pub. (United States. National Imagery and Mapping Agency) ; 180
Pub. (United States. National Geospatial-Intelligence Agency) ; 180