Proceedings of a symposium - Allen, L. H., Jr.,; Kirkham, M. B.,; Olszyk, D. M.,; Whitman, C. E.,; Hatfield, Jerry L.,; Baenziger, P. Stephen,; Bigham, Jerry M.,; Kral, David M.,; Viney, Marian K., (American Society of Agronomy ; Crop Science Society of America ; Soil Science Society of America, 1997)
ASA Special Publication Number 61
Base de Datos Wiley.