The National Nonindigenous Aquatic Species Program: U.S. Geological Survey Fact Sheet 2012-3100
By: R.J. Pawlitz and K.D.David
The U.S. Geological Survey (USGS) Nonindigenous Aquatic Species (NAS) Program monitors, analyzes, and records sightings of non-native (introduced) aquatic species through-out the United States. The program is based at the USGS Southeast Ecological Science Center in Gainesville, Florida.
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