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 / 
Organizing Committee D.M. Van Doren ... (et al.) 
 - Madison, Wis. :  American Society of Agronomy,  1982. 
 - 198p. :  ill. ;  23 cm. 
 - ASA special publication  no.44 .
<br/><br/> Includes bibliographies. 
<br/><br/><label>ISBN: </label>0891180699 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tillage--Congresses.<br/>Soil physics--Congresses.