1981 Characterization of Prune and Walnut Orchard Soils for Water Infiltration Improvement Potential Wildman, William E., Dennis E. Rolston, Herbert Schulbach. 1981.
1983 Infiltration Improvement for Prune and Walnut Orchard Soils Singer, Michael J., John R. Munn Jr., William E. Wildman. 1983.
1982 Characterization of Prune and Walnut Orchard Soils for Water Infiltration Improvement Potential Singer, Michael J., John R. Munn Jr., William E. Wildman. 1982.