P.K. Bretting and D.N. Duvick, Dynamic Conservation of Plant Genetic Resources.
A. Jungk and N. Claasen, Ion Diffusion in the Soil-Root System. H.W.M. Hilhorst and P.E. Tooroop, A Review on Dormancy, Germinability and Germination in Crop and Weed Seeds.
P.D. Brown and M.J. Morra, Control of Soil-Borne Pests Using Glucosinolate Containing Plants.
R.I. Barnhisel and J.M. Hower, Coal Surface Mine Reclamation in the Eastern United States: The Revegetation of Disturbed Lands to Hayland/Pasture or Cropland.