Experience with Human Factors in Agricultural Areas of the World /
| 格式: | 圖書 |
|---|---|
| 語言: | English Spanish |
| 出版: |
Washington, D.C. :
Extension Service, U.S. Department of Agriculture, .
1949.
|
| 主題: |
| 實物描述: | 22 páginas ; 26 cm |
|---|
| 格式: | 圖書 |
|---|---|
| 語言: | English Spanish |
| 出版: |
Washington, D.C. :
Extension Service, U.S. Department of Agriculture, .
1949.
|
| 主題: |
| 實物描述: | 22 páginas ; 26 cm |
|---|