co-editors, John L. Havlin, Jeffrey S. Jacobsen ; editorial committee, John L. Havlin ... [and others] ; symposium planning committee, John L. Havlin ... [and others] ; editor-in-chief, Larry P. Wilding ; managing editor, David M. Kral ; associate editor, Marian K. Viney
"Proceedings of symposiums sponsored by S-4, S-8, S-3, and S-9 of the American Society of Agronomy and Soil Science Society of America. The papers were presented during the annual meetings in Cincinnati, OH, 7-12 Nov. 1993."-- t. p.