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Surface-water quality changes after 5 years of nutrient management in the Little Conestoga Creek headwaters, Pennsylvania, 1989-91 / by Edward H. Koerkle and Linda C. Gustafson-Minnich ; with a section of "Benthic Macroinvertebrates" by Michael D. Bilger ; prepared in cooperation with the Pennsylvania Department of Environmental Protection, Bureau of Land and Water Conservation. (Water-resources investigations report ; 97-4048)
Surface-water quality changes after 5 years of nutrient management in the Little Conestoga Creek headwaters, Pennsylvania, 1989-91 / by Edward H. Koerkle and Linda C. Gustafson-Minnich ; with a section of "Benthic Macroinvertebrates" by Michael D. Bilger ; prepared in cooperation with the Pennsylvania Department of Environmental Protection, Bureau of Land and Water Conservation. (Water-resources investigations report ; 97-4048)
Paper
図書
U.S. Dept. of the Interior, U.S. Geological Survey
1997.
<ME354-A189>
National Diet Library
Subject Heading
... Pennsylvania.
Nutrient pollution of water -- Pennsylvania.
Plant nutrients -- Environmen...
Effects of agricultural best-management practices on the Brush Run Creek headwaters, Adams County, Pennsylvania, prior to and during nutrient management / by Michael J. Langland and David K. Fishel ; prepared in cooperation with the Susquehanna River Basin Commission and the Pennsylvania Department of Environmental Resources, Bureau of Land and Water Conservation. (Water-resources investigations report ; 95-4195)
Effects of agricultural best-management practices on the Brush Run Creek headwaters, Adams County, Pennsylvania, prior to and during nutrient management / by Michael J. Langland and David K. Fishel ; prepared in cooperation with the Susquehanna River Basin Commission and the Pennsylvania Department of Environmental Resources, Bureau of Land and Water Conservation. (Water-resources investigations report ; 95-4195)
Paper
図書
U.S. Dept. of the Interior, U.S. Geological Survey
1996.
<ME354-A77>
National Diet Library
Evaluation of agricultural best-management practices in the Conestoga River Headwaters, Pennsylvania : effects of nutrient management on quality of surface runoff at a small carbonate-rock site near Ephrata, Pennsylvania, 1984-90 / by David W. Hall, Patricia L. Lietman, and Edward H. Koerkle ; prepared in cooperation with the Pennsylvania Department of Environmental Protection. (Water-quality study of the Conestoga River Headwaters, Pennsylvania) (Water-resources investigations report ; 95-4143)
Evaluation of agricultural best-management practices in the Conestoga River Headwaters, Pennsylvania : effects of nutrient management on quality of surface runoff at a small carbonate-rock site near Ephrata, Pennsylvania, 1984-90 / by David W. Hall, Patricia L. Lietman, and Edward H. Koerkle ; prepared in cooperation with the Pennsylvania Department of Environmental Protection. (Water-quality study of the Conestoga River Headwaters, Pennsylvania) (Water-resources investigations report ; 95-4143)
Paper
図書
U.S. Dept. of the Interior, U.S. Geological Survey
1997.
<NA217-A443>
National Diet Library
Evaluation of agricultural best-management practices in the Conestoga River Headwaters, Pennsylvania : effects of pipe-outlet terracing on quantity and quality of surface runoff and ground water in a small carbonate-rock basin near Churchtown, Pennsylvania, 1983-89 / by Patricia L. Lietman, Linda C. Gustafson-Minnich, and David W. Hall ; prepared in cooperation with the Pennsylvania Department of Environmental Protection. (Water-quality study of the Conestoga River Headwaters, Pennsylvania) (Water-resources investigations report ; 94-4206)
Evaluation of agricultural best-management practices in the Conestoga River Headwaters, Pennsylvania : effects of pipe-outlet terracing on quantity and quality of surface runoff and ground water in a small carbonate-rock basin near Churchtown, Pennsylvania, 1983-89 / by Patricia L. Lietman, Linda C. Gustafson-Minnich, and David W. Hall ; prepared in cooperation with the Pennsylvania Department of Environmental Protection. (Water-quality study of the Conestoga River Headwaters, Pennsylvania) (Water-resources investigations report ; 94-4206)
Paper
図書
U.S. Dept. of the Interior, U.S. Geological Survey
1997.
<NA217-A422>
National Diet Library
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