Arctic Ocean : the unexpected frontier /
National Geographic Maps (Firm)
Washington, D.C. : National Geographic Society,
2009.
Relief shown by shading and spot heights. Depths shown by soundings and bathymetric tints.
Suppl. to the National Geographic, May 2009.
Includes text and 3 ancillary maps.
Ancillary maps: Ocean of change -- Energy prospects -- Territorial claims.
Climatic changes