共 8 条
- [1] HATHAWAY DE, 1955, MICH AGR EXPT STA TE, V250
- [2] JOHNSON GL, 1952, KENTUCKY AGR EXPT ST, V580
- [3] SANDERSON FH, 1954, METHODS CROP FORECAS, P235
- [4] STALLINGS JL, 1958, THESIS MICHIGAN STAT
- [5] THOMPSON LM, 1963, CAED17 IOW STAT U SC
- [6] *USDA, MEAS EFF WEATH AGR O
- [7] WALLACE, 1920, US MONTHLY WEATHER R, V48, P439
- [8] WALLACE, 1920, US MONTHLY WEATHER R, V48, P446