Authors: SQUILLACE PJ BURKART MR SIMPKINS WW

Citation: Pj. Squillace et al., INFILTRATION OF ATRAZINE AND METABOLITES FROM A STREAM TO AN ALLUVIALAQUIFER, Journal of the american water resources association, 33(1), 1997, pp. 89-95

Authors: SCHULTZ RC COLLETTI JP ISENHART TM SIMPKINS WW MIZE CW THOMPSON ML

Citation: Rc. Schultz et al., DESIGN AND PLACEMENT OF A MULTISPECIES RIPARIAN BUFFER STRIP SYSTEM, Agroforestry systems, 29(3), 1995, pp. 201-226

Authors: PARKIN TB SIMPKINS WW

Citation: Tb. Parkin et Ww. Simpkins, CONTEMPORARY GROUNDWATER METHANE PRODUCTION FROM PLEISTOCENE CARBON, Journal of environmental quality, 24(2), 1995, pp. 367-372

Authors: SIMPKINS WW

Citation: Ww. Simpkins, ISOTOPIC COMPOSITION OF PRECIPITATION IN CENTRAL IOWA, Journal of hydrology, 172(1-4), 1995, pp. 185-207

Authors: SIMPKINS WW PARKIN TB

Citation: Ww. Simpkins et Tb. Parkin, HYDROGEOLOGY AND REDOX GEOCHEMISTRY OF CH4 IN A LATE WISCONSINAN TILLAND LOESS SEQUENCE IN CENTRAL IOWA, Water resources research, 29(11), 1993, pp. 3643-3657