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Evaluation of agricultural best-management practices in the Conestoga River Headwaters, Pennsylvania : hydrology of a small carbonate site near Ephrata, Pennsylvania, prior to implementation of nutrient management / by Edward H. Koerkle ... [et al.] ; prepared in cooperation with the Pennsylvania Department of Environmental Protection. Rev. May 1997. (Water-quality study of the Conestoga River Headwaters, Pennsylvania) (Water-resources investigations report ; 93-4173)

Evaluation of agricultural best-management practices in the Conestoga River Headwaters, Pennsylvania : hydrology of a small carbonate site near Ephrata, Pennsylvania, prior to implementation of nutrient management / by Edward H. Koerkle ... [et al.] ; prepared in cooperation with the Pennsylvania Department of Environmental Protection. Rev. May 1997. (Water-quality study of the Conestoga River Headwaters, Pennsylvania) (Water-resources investigations report ; 93-4173)
Paper図書
U.S. Dept. of the Interior, U.S. Geological Survey1997.<NA217-A446>
National Diet Library
  • Author HeadingKoerkle, Edward H.

Evaluation of agricultural best-management practices in the Conestoga River Headwaters, Pennsylvania : hydrology of a small carbonate site near Ephrata, Pennsylvania, prior to implementation of nutrient management / by Edward H. Koerkle ... [et al.] ; prepared in cooperation with the Pennsylvania Department of Environmental Protection. (Water-quality study of the Conestoga River Headwaters, Pennsylvania) (Water-resources investigations report ; 93-4173)

Evaluation of agricultural best-management practices in the Conestoga River Headwaters, Pennsylvania : hydrology of a small carbonate site near Ephrata, Pennsylvania, prior to implementation of nutrient management / by Edward H. Koerkle ... [et al.] ; prepared in cooperation with the Pennsylvania Department of Environmental Protection. (Water-quality study of the Conestoga River Headwaters, Pennsylvania) (Water-resources investigations report ; 93-4173)
Paper図書
U.S. Dept. of the Interior, U.S. Geological Survey1996.<NA217-A392>
National Diet Library
  • Author HeadingKoerkle, Edward H.

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 Survey1997.<NA217-A443>
National Diet Library
  • Author Heading...n, Patricia L. Koerkle, Edward H. Pennsylvania. Dept. of Enviro...

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 Survey1997.<ME354-A189>
National Diet Library
  • Author HeadingKoerkle, Edward H. Gustafson-Minnich, Linda C. B...

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