Is Corn Yield Variability Changing?
| Autor: | Swanson, Earl R., Smith, Donald G. |
|---|---|
| Zdroj: | Illinois Agricultural Economics, 1971 Jul 01. 11(2), 13-15. |
| Databáze: | JSTOR Journals |
| Externí odkaz: |
|
| Autor: | Swanson, Earl R., Smith, Donald G. |
|---|---|
| Zdroj: | Illinois Agricultural Economics, 1971 Jul 01. 11(2), 13-15. |
| Databáze: | JSTOR Journals |
| Externí odkaz: |
|