TY  - BOOK
AU  - Cox, Joseph F.
AU  - Jackson , Lyman
TI  - Field crops and land use
U1  - 633 21st ed.
PY  - 1949///
CY  - New York
PB  - John Wiley
KW  - Agriculture
KW  - Field crops
KW  - Land use
N1  - Index: pp 461-73
ER  -