DescriptionTopographic mapof the USA.png Topographical mapof the United States of America. Source http://www.demis.nl/. They grant "permission to freely copy the PNG images
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extent and volume of the spill applies to jurisdiction: United States of America determination method: work of the federal government of the United States
Hydrological features like lakes and streams (1.65 million) T code - Topological features like mountains and valleys (1.02 million) Other codes - Everything