MARC状态:已编 文献类型:西文图书 浏览次数:77
- 题名/责任者:
- Changes in technology and labor requirements in crop production : wheat and oats / by Robert B. Elwood ... [et al.].
- 出版发行项:
- Philadelphia, Pa., 1939.
- 载体形态项:
- xv, 182 p. : ill., maps ; 26 cm.
- 附加个人名称:
- McKibben, Eugene George, 1895- [from old catalog]
- 论题主题:
- Agricultural laborers-United States. [from old catalog]
- 论题主题:
- Wheat-United States. [from old catalog]
- 论题主题:
- Oats. [from old catalog]
- 中图法分类号:
- S512
- 随书光盘:
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