TY  - BOOK
AU  - Unger,P.W.
AU  - 
AU  - 
TI  - 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 
SN  - 0891180699
PY  - 1982///
CY  - Madison, Wis.
PB  - American Society of Agronomy
KW  - Tillage
KW  - Congresses
KW  - Soil physics
N1  - Includes bibliographies
ER  -