TY  - BOOK
AU  - Follett,R.F.
AU  - Stewart,B.A.
TI  - Soil erosion and crop productivity
U1  - 631.4 
PY  - 1985///
CY  - Madison, Wis., U.S.A
PB  - American Society of Agronomy
KW  - Soil erosion
KW  - Soil conservation
KW  - Crops and soils
KW  - Crop yields
KW  - United States
ER  -