Authors: Clay, DE Clay, SA Liu, Z Reese, C

Citation: De. Clay et al., Spatial variability of C-13 isotopic discrimination in corn, COMM SOIL S, 32(11-12), 2001, pp. 1813-1827

Authors: Clay, SA Dowdy, RH Lamb, JA Anderson, JL Lowery, B Knighton, RE Clay, DE

Citation: Sa. Clay et al., Herbicide movement and dissipation at four midwestern sites, J ENVIR S B, 35(3), 2000, pp. 259-278

Authors: Clay, DE Chang, J Carlson, CG Malo, D Clay, SA Ellsbury, M

Citation: De. Clay et al., Precision farming protocols. Part 2. Comparison of sampling approaches forprecision phosphorus management, COMM SOIL S, 31(19-20), 2000, pp. 2969-2985

Authors: Clay, SA Lems, GJ Clay, DE Forcella, F Ellsbury, MM Carlson, CG

Citation: Sa. Clay et al., Sampling weed spatial variability on a fieldwide scale, WEED SCI, 47(6), 1999, pp. 674-681