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Assessment of nitrate contamination of the upper aquifer in the Manatí-Vega Baja area, Puerto Rico by Carlos Conde-Costas and Fernando Gómez-Gómez ; in cooperation with the Puerto Rico Environmental Quality Board. por

Series Water resources investigations report ; 99-4040

Detalles de publicación: San Juan, P.R. Denver, CO U.S. Dept. of the Interior, U.S. Geological Survey Branch of Information Services [distributor] 1999

Disponibilidad: Ítems disponibles para préstamo: Biblioteca Encarnación Valdés (1)Signatura topográfica: PR 553.797295 C7451a.

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Ionic composition and nitrate in drainage water from fields fertilized with different nitrogen sources, Middle Swamp watershed, North Carolina, August 2000-August 2001 by Stephen L. Harden and Timothy B. Spruill ; prepared in cooperation with the North Carolina Department of Environment and Natural Resources, Division of Water Quality, Groundwater Section. por

Series Scientific investigations report ; 2004-5123

Detalles de publicación: [Reston, Va.] U.S. Geological Survey 2004

Disponibilidad: Ítems disponibles para préstamo: Biblioteca Encarnación Valdés (1)Signatura topográfica: 363.7394756 H2591i.

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Ionic composition and nitrate in drainage water from fields fertilized with different nitrogen sources, Middle Swamp watershed, North Carolina, August 2000-August 2001 [microform] by Stephen L. Harden and Timothy B. Spruill ; prepared in cooperation with the North Carolina Department of Environment and Natural Resources, Division of Water Quality, Groundwater Section. por

Series Scientific investigations report ; 2004-5123.

Detalles de publicación: [Reston, Vir.] U.S. Geological Survey 2004

Disponibilidad: Ítems disponibles para préstamo: Biblioteca Encarnación Valdés (1)Signatura topográfica: I 19.42/4-4:2004-5123.

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Determining sources of water and contaminants to wells in a carbonate aquifer near Martinsburg, Blair County, Pennsylvania, by use of geochemical indicators, analysis of anthropogenic contaminants, and simulation of ground-water flow by Bruce D. Lindsey and Michele L. Koch ; in cooperation with the Southern Alleghenies Conservancy and the Borough of Martinsburg, Pennsylvania. por

Series Scientific investigations report ; 2004-5124

Detalles de publicación: Reston, Va. Denver, CO U.S. Dept. of the Interior, U.S. Geological Survey For sale by U.S. Geological Survey, Information Services 2004

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Disponibilidad: Ítems disponibles para préstamo: Biblioteca Encarnación Valdés (1)Signatura topográfica: 553.7909748 L752d.

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Precipitation, ground-water age, ground-water nitrate concentrations, 1995-2002, and ground-water levels, 2002-03 in eastern Bernalillo County, New Mexico by Paul J. Blanchard ; prepared in cooperation with Bernalillo County. por

Series Scientific investigations report ; 2004-5189

Detalles de publicación: Reston, Va. Denver, CO U.S. Dept. of the Interior, U.S. Geological Survey U.S. Geological Survey, Information Services [distributor] 2004

Disponibilidad: Ítems disponibles para préstamo: Biblioteca Encarnación Valdés (1)Signatura topográfica: 551.4909789 B6392p.

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Su búsqueda retornó 5 resultados.