Intellectual property rights associated with plants - Caldwell, B. E.,; Schillinger, J. A.,; Barton, J. H.,; Qualset, C. O.,; Duvick, D. N.,; Barnes, R. F., (Crop Science Society of America, Inc. ; American Society of Agronomy, Inc., Soil Science Society of America, Inc., 1989)
ASA Special Publication Number 52