TY  - BOOK
AU  - Throne,David Wynne
AU  - Throne,Marlowe D
TI  - Soil ,Water and Crop Production
SN  - 0870552813
U1  - 630.2745 
PY  - 1979///
CY  - Westport,Connecticut
PB  - AVI Publishing Co.
KW  - Agricultural ecology
KW  - Agriculture
KW  - Cropping Systems
KW  - Agricultural geography
ER  -