MARC状态：已编 文献类型：西文图书 浏览次数：75
- 题名/责任者:
- Changes in technology and labor requirements in crop production : sugar beets / by Loring K. Macy ... [etal.].
- 出版发行项:
- Philadelphia, Pa., 1937.
- 载体形态项:
- xv, 48 p. : ill. ; 26 cm.
- 丛编说明:
- National Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques. Studies of changing techniques and employment in agriculture. [Report no. A-1]
- 个人责任者:
- Macy, Loring K.
- 论题主题:
- Farm mechanization-United States
- 论题主题:
- Beets and beet sugar-United States.
- 论题主题:
- Agricultural laborers-United States
- 中图法分类号:
- S566.3
- 一般附注:
- Issued also in Changes in technology and labor requirements in crop production: vegetables, potatoes, sugar beets (National Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques) [1937-39]
- 一般附注:
- Series title in part also on t.p.
- 一般附注:
- Photoprinted.
- 书目附注:
- Includes bibliographical references.
- 随书光盘:
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