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The National Map seamless digital elevation model specifications [研究报告]
10.3133/tm11B9U.S. Geological Survey. 2017-01-01
Archuleta, Christy-Ann M. carchule@usgs.gov;  Constance, Eric W. econstance@usgs.gov;  Arundel, Samantha T. sarundel@usgs.gov;  Lowe, Amanda J. alowe@usgs.gov;  Mantey, Kimberly S. kmantey@usgs.gov;  Phillips, Lori A. lphillips@usgs.gov
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Physical, chemical, and biological characteristics of selected headwater streams along the Allegheny Front, Blair County, Pennsylvania, July 2011–September 2013 [研究报告]
10.3133/ofr20151173U.S. Geological Survey. 2016-01-01
Low, Dennis J. djlow@usgs.gov;  Brightbill, Robin A. rabright@usgs.gov;  Eggleston, Heather L. egglesto@usgs.gov;  Chaplin, Jeffrey J. jchaplin@usgs.gov
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