General Bathymetric Chart of the Oceans (GEBCO) = Carte générale Bathymétrique des Oceans (GEBCO).
General Bathymetric Chart of the Oceans.
Ottawa :  Canadian Hydrographic Service, 
1984.
"GEBCO sheet 5.00".
In margin: Arctic Ocean; Antarctica. Scale 1:25,000,000. Polar sterographic projection.
Published under the authority of the International Hydrographic Organization and the Intergovernmental Oceanographic Commission.