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Authors
Omernik, James M.
Griffith, Glenn E. http://orcid.org/0000-0001-7966-4720
Hughes, Robert M.
Glover, James B.
Weber, Marc H.
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Funding
Funding for this research was provided by:
U.S. Geological Survey
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Article History
Received: 17 August 2016
Accepted: 20 March 2017
First Online: 4 April 2017
Conflict of interest
: The authors declare that they have no competing interests.
