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1. Geographic Names Information System (GNIS) for Alaska and Hawaii 2008

2008. U.S. Geological Survey. The Geographic Names Information System (GNIS), developed by the U.S. Geological Survey in cooperation with the U.S. Board on Geographic Names (BGN...

2. Zebra Mussel Distribution: United States

2008. U.S. Geological Survey. The concern caused by the explosive spread of the zebra mussel, (Dreissena polymorpha), within the United States resulted in passage of the Nonindi...