TY  - BOOK
AU  - Chapman, Stephen R,
TI  - Crop Production : Principle and Practices
SN  - 0716705818
U1  - 633 
PY  - 1979///
CY  - San Francisco
PB  - W. H. Freeman & Co.
KW  - Crop Production
KW  - Field & plantation crops
KW  - Field Crops
ER  -