| Pesticides in near-surface aquifers; results of the midcontinental United States ground-water reconnaissance, 1991-92, pp. 505-513, <In>, Morganwalp, D.W.; and Aronson, D.A.; U.S. Geological Survey Toxic Substance Hydrology Program; proceedings of the technical meeting |
Kolpin, D.W.; Goolsby, D.A.; Aga, D.S.; Iverson, J.L.; and Thurman, E.M. |
U.S. Geological Survey, Water Resources Investigations no. 94-4015, 1113 pages |
1996 |
N/A
|
| Pesticides in near-surface aquifers; results of the midcontinental United States ground-water reconnaissance, 1991-92, pp. 64-74, <In>, Goolsby, D.A.; Boyer, L.L.; and Mallard, G.E., (compls.); Selected papers in agricultural chemicals in water resources of the mid-continental United States |
Kolpin, D.W.; Goolsby, D.A.; Aga, D.S.; Iverson, J.L.; and Thurman, E.M. |
U.S. Geological Survey, Open-file Report no. 93-0418, 89 pages |
1993 |
N/A
|