Yazar
David K Fishel
4 cilt bulundu.
Cilt sonuçları
Occurrence of nitrate and herbicides in ground water in the upper Conestoga River basin, Pennsylvania
David K Fishel · U.S. Dept. of the Interior, Geological Survey
Sayfa sayısı yok · 1986
Groundwater / Water quality
Hydrology and the hypothetical effects of reducing nutrient applications of water quality in the Bald Eagle Creek Headwaters, southeastern Pennsylvania prior to implementation of agricultural best-management practices
David K Fishel · U.S. Dept. of the Interior, U.S. Geological Survey
59 sayfa · 1991
Environmental aspects / Environmental aspects of Fertilizers / Fertilizers / Hydrology / Stream measurements
Results of a preimpoundment water-quality study of Swatara Creek, Pennsylvania
David K Fishel · Open-File Services Section, Western Distribution Branch
84 sayfa · 1986
Water quality
Preimpoundment hydrologic conditions in the Swatara Creek (1981-84) and estimated postimpoundment water quality in and downstream from the planned Swatara State Park Reservoir, Lebanon and Schuylkill Counties, Pennsylvania
David K Fishel · Dept. of the Interior, U.S. Geological Survey
108 sayfa · 1988
Water quality / Stream measurements