TY  - BOOK
AU  - Thorne,David Wynne
AU  - Thorne,Marlowe D.
TI  - Soil, water and crop production
SN  - 0870552813 
AV  - S589.7.S64 1976
PY  - 1976///
CY  - Westport
PB  - AVI Publishing company 
KW  - Agricultural ecology
KW  - Agriculture
KW  - Cropping systems
KW  - Agricultural geography
ER  -