推荐引用方式 GB/T 7714 |
Oelsner, Gretchen P. goelsner@usgs.gov,Sprague, Lori A. lsprague@usgs.gov,Murphy, Jennifer C. jmurphy@usgs.gov,等. Water-quality trends in the nation’s rivers and streams, 1972–2012—Data preparation, statistical methods, and trend results:U.S. Geological Survey,2017.
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