Books by Edward H. Koerkle:
Books in the extended shelves:
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Koerkle, Edward H.: Evaluation of agricultural best management practices in the Conestoga River headwaters, Pennsylvania (U.S. Dept. of the Interior, U.S. Geological Survey ;, 1996), also by Geological Survey (U.S.) and Pennsylvania. Dept. of Environmental Protection (page images at HathiTrust)- Koerkle, Edward H.: Evaluation of agricultural best management practices in the Conestoga River Headwaters, Pennsylvania (U.S. Dept. of the Interior, U.S. Geological Survey :, 1996), also by Geological Survey (U.S.) and Pennsylvania. Department of Environmental Protection (page images at HathiTrust)
- Koerkle, Edward H.: Evaluation of agricultural best management practices in the Conestoga River headwaters, Pennsylvania. (U.S. Dept. of the Interior, U.S. Geological Survey ;, 1997), also by Geological Survey (U.S.) and Pennsylvania. Department of Environmental Protection (page images at HathiTrust)
- Koerkle, Edward H.: Herbicide concentrations in and loads transported by the Conestoga River and Pequea Creek, Lancaster County, Pennsylvania, 1992-95 (U.S. Dept. of the Interior, U.S. Geological Survey ;, 1997), also by Lloyd A. Reed, Charles S. Takita, Geological Survey (U.S.), and Susquehanna River Basin Commission (page images at HathiTrust)
- Koerkle, Edward H.: Relations of biological indicators to nutrient data for lakes and streams in Pennsylvania and West Virginia, 1990-98 (U.S. Dept. of the Interior, U.S. Geological Survey, 2003), also by Robin A. Brightbill, United States Environmental Protection Agency, Pennsylvania. Department of Environmental Protection, and Geological Survey (U.S.) (page images at HathiTrust)
- Koerkle, Edward H.: Simulation of streamflow and water quality in the Brandywine Creek subbasin of the Christina River basin, Pennsylvania and Delaware, 1994-98 (U.S. Dept. of the Interior, U.S. Geological Survey ;, 2003), also by Lisa A. Senior, Pennsylvania. Department of Environmental Protection, Delaware. Department of Natural Resources and Environmental Control, Delaware Riverasin Commission, and Geological Survey (U.S.) (page images at HathiTrust)
- Koerkle, Edward H.: Simulation of streamflow and water quality in the White Clay Creek Subbasin of the Christina River Basin, Pennsylvania and Delaware, 1994-1998 (U.S. Dept. of the Interior, U.S. Geological Survey ;, 2003), also by Lisa A. Senior, Pennsylvania. Department of Environmental Protection, Delaware. Department of Natural Resources and Environmental Control, Delaware River Basin Commission, and Geological Survey (U.S.) (page images at HathiTrust)
- Koerkle, Edward H.: Surface water quality changes after 5 years of nutrient management in the Little Conestoga Creek headwaters, Pennsylvania, 1989-91 (U.S. Dept. of the Interior, U.S. Geological Survey ;, 1997), also by Michael D. Bilger, Linda C. Gustafson-Minnich, Pennsylvania. Bureau of Land and Water Conservation, and Geological Survey (U.S.) (page images at HathiTrust)
Find more by Edward H. Koerkle at your library, or elsewhere.