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Sanitary quality of surface water during base-flow conditions in the Municipality of Caguas, Puerto Rico, 2014–15: A comparison with results from a similar 1997–99 study [研究报告]
10.3133/sir20175045U.S. Geological Survey. 2017-01-01
Rodríguez-Martínez, Jesús jrodr@usgs.gov;  Guzmán-Ríos, Senén
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