PUCPR Search for 'an:142968'

Assessment of nitrate contamination of the upper aquifer in the Manatí-Vega Baja area, Puerto Rico

By Conde-Costas, Carlos..
San Juan, P.R. | Denver, CO U.S. Dept. of the Interior, U.S. Geological Survey | Branch of Information Services [distributor] 1999 .
v, 43 p. , Shipping list no.: 99-0235-P. 28 cm..

Ionic composition and nitrate in drainage water from fields fertilized with different nitrogen sources, Middle Swamp watershed, North Carolina, August 2000-August 2001

By Harden, Stephen L..
[Reston, Va.] U.S. Geological Survey 2004 .
iv, 14 p. , Shipping list no.: 2004-0266-P. 28 cm..

Ionic composition and nitrate in drainage water from fields fertilized with different nitrogen sources, Middle Swamp watershed, North Carolina, August 2000-August 2001

By Harden, Stephen L..
[Reston, Vir.] U.S. Geological Survey 2004 .
iv, 14 p. , Shipping list no.: 2004-511-M. 28 cm..

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 Lindsey, Bruce D..
Reston, Va. | Denver, CO U.S. Dept. of the Interior, U.S. Geological Survey | For sale by U.S. Geological Survey, Information Services 2004 .
vi, 46 p. , Shipping list no.: 2005-0081-P. 28 cm..

Precipitation, ground-water age, ground-water nitrate concentrations, 1995-2002, and ground-water levels, 2002-03 in eastern Bernalillo County, New Mexico

By Blanchard, Paul J..
Reston, Va. | Denver, CO U.S. Dept. of the Interior, U.S. Geological Survey | U.S. Geological Survey, Information Services [distributor] 2004 .
iv, 36 p. , Shipping list no.: 2005-0151-P. 28 cm..