Occurrence of nitrate and herbicides in ground water in the upper Conestoga River basin, Pennsylvania
|Main Author:||Fishel, David K.|
|Other Authors:||Lietman, Patricia L., United States. Department of Agriculture., Pennsylvania. Department of Environmental Resources., Geological Survey (U.S.)|
Harrisburg, Pa. : Denver, Colo. :
U.S. Dept. of the Interior, Geological Survey ; Open-file Reports, U.S. Geological Survey, [distributor],
iii, 8 pages : 1 map ; 28 cm.
Water-resources investigations report ;