1. Dow Chemical U.S.A;
2. North Carolina State University.
3. W. A. Kleschick, M. J. Costales, J. E. Dunbar, R. W. Meikle, W. T. Monte, N. R. Pearson, S. W. Snider and A. P. Vinogradoff, 194th National Meeting of the American Chemical Society, New Orleans, LA, September 3, 1987; paper AGRO 162.