"June 2011." Relief shown by shading and spot heights. Depths shown by shading and soundings. Available also through the Library of Congress Web site as a raster image. "803482AI (G00010) 6-11." Includes notes.
United States. Central Intelligence Agency
2011
<a rel="nofollow" class="external free" href="https://www.loc.gov/item/2012592855/">https://www.loc.gov/item/2012592855/</a>