위키백과 ― 우리 모두의 백과사전.
FRom en Wiki by Bluelion. Cite from en wiki:
Map of Mississippi River. I made this map myself and reserve no rights to it. The maps were made by extensively modifying copyright-free maps generated by U.S. Government on-line mapping utilites, either the Department of the Interior's National Atlas of the United States Interactive Map Browser, or the U.S. Census Bureau's old TIGER Map Browser.
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