TY  - BOOK
AU  - Metcalfe, Darrel S.,
TI  - Crop Production : Principles and Practices
SN  - 0023807105
U1  - 633 
PY  - 1980///
CY  - New York
PB  - Macmillan Publishing Company
KW  - Crop Production
KW  - Field & plantation crops
KW  - Field Crops
ER  -