TY  - BOOK
AU  - Larson,Donald Keith
AU  - Thompson,Layton S.
TI  - Variability of wheat yields in the Great Plains
T2  - United States. Dept. of Agriculture. Economic Research Service. ERS
PY  - 1966///]
CY  - Washington
KW  - Wheat
KW  - Great Plains
KW  - Wheat yields
ER  -