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You searched for: Author I.M. Systems Group Remove constraint Author: I.M. Systems Group Publisher United States. National Oceanic and Atmospheric Administration Remove constraint Publisher: United States. National Oceanic and Atmospheric Administration Subject Boundaries Remove constraint Subject: Boundaries Institution Stanford Remove constraint Institution: Stanford Year 2013 Remove constraint Year: 2013
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1. North Atlantic Maintained Channels, 2013

2013. I.M. Systems Group. This polygon shapefile represents maintained navigation channels in the North Atlantic United States. The condition of navigation channels is repor... United States. National Oceanic and Atmospheric Administration.