Predicting tillage effects on soil physical properties and processes : proceedings of symposium sponsored by Divisons A-3, S-6, and S-1 of the American Society of Agronomy and the Soil Science Society of America - Unger, P. W.; American Society of Agronomy; Soil Science Society of America (Madison, Wis. : American Society of Agronomy, 1982)
Includes bibliographies.
Keywords: Tillage -- Congresses; Soil physics -- Congresses