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From en:Image:Nicobar_Islands.jpg:
From the Indian Ocean Atlas, published by the Central Intelligence Agency, 1976.
This image is a work of a Central Intelligence Agency employee, taken or made during the course of the person's official duties. As a work of the U.S. federal government, all images created or made by the CIA are in the public domain, with the exception of classified information.
Taken from that map site of Texas University and it says that CIA made it. It qualifies to the rules stated at http://www.lib.utexas.edu/usage_statement.html
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