TY  - BOOK
AU  - Delorit,Richard J.
AU  - Greub,Louis J.
AU  - Ahlgren,Henry L.
TI  - Crop production
SN  - 0131947613
PY  - 1974///
CY  - Englewood Cliffs, N. J.
PB  - Prentice-Hall
KW  - Field crops
N1  - Includes references and index
ER  -