Experience with Human Factors in Agricultural Areas of the World /
| Формат: | Книга |
|---|---|
| Мова: | English Spanish |
| Опубліковано: |
Washington, D.C. :
Extension Service, U.S. Department of Agriculture, .
1949.
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| Предмети: |
| Фізичний опис: | 22 páginas ; 26 cm |
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