Changes in technology and labor requirements in crop production sugar beets
| 第一著者: | |
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| その他の著者: | , , |
| フォーマット: | 図書 |
| 言語: | English |
| 出版事項: |
Philadelphia, Pa.
s.n.
1937.
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| シリーズ: | Half-title : National research project on reemployment opportunities and recent changes in industrial techniques...Studies of changing techniques and employment in agriculture...[Report no. A-1]
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| 主題: |