2007. National Center for Ecological Analysis and Synthesis. This raster layer represents global commercial shipping activity including location and travel routes. Commercial shipping activity can lead to shi... Science.
Search Results
1787. Rumsey, David, 1944- and Boulton, S. This layer is a georeferenced image of a map of Africa originally created by S. Boulton in 1787. The original map appears in 'A general atlas, desc... Cartography Associates.