TY  - GEN
AU  - Jones, J. Benton 
TI  - Agronomic handbook : management of crops, soils, and their fertility
SN  - 0849308976
U1  - 630 
PY  - 2003///
CY  - Boca Raton
PB  - CRC press
KW  - Agronomy- handbook, manuals
ER  -