Compilation of atrazine and selected herbicide data from previous surface-water-quality investigations within the Big Blue River Basin, Nebraska, 1983-92

by Frankforter, Jill D.
Published: U.S. Dept. of the Interior, U.S. Geological Survey ; Earth Science Information Center, Open-File Reports Section [distributor], 1994

Distribution of selected nitrogen compounds in ground water and the unsaturated zone, Superior-Hardy Special Protection Area, Nuckolls County, Nebraska, 1991-93

by Chen, Abraham H.
Published: U.S. Dept. of the Interior, U.S. Geological Survey ; Branch of Information Services [distributor], 1996

Water quality and chemical evolution of ground water in the Long Pine Creek area, Brown and Rock counties, Nebraska, 1993-94

by Druliner, A. D.
Published: U.S. Dept. of the Interior, U.S. Geological Survey ; Branch of Information Services [distributor], 1997

Water quality and chemical evolution of ground water in the Long Pine Creek area, Brown and Rock counties, Nebraska, 1993-94

by Druliner, A. D.,
Published: U.S. Geological Survey, 1997

Distribution of selected nitrogen compounds in ground water and the unsaturated zone, Superior-Hardy Special Protection Area, Nuckolls County, Nebraska, 1991-93

by Chen, Abraham H.,
Published: U.S. Department of the Interior, U.S. Geological Survey, 1996