TY  - BOOK
AU  - Hanks, R. J.
AU  - Ritchie, J. T.
TI  - Modeling plant and soil systems
SN  - 0891181067
U1  - 631 AME 1991 
PY  - 1991///
CY  - Madison, Wis., USA
PB  - American Society of Agronomy, Crop Science Society of America, Soil Science Society of America
KW  - Crops and soils
KW  - Crops
KW  - Soils
KW  - Cropping systems
ER  -