Science for better living.
Saved in:
| 企业作者: | |
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| 格式: | 图书 |
| 语言: | English |
| 出版: |
[Washington,
For sale by the Supt. of Docs., U.S. Govt. Print. Off.,
1968]
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| 丛编: | Yearbook of agriculture (Washington, D.C. : 1926) ;
1968. |
| 主题: |
| 实物描述: | xlvi, 386 p. illus. (part col.) ports. 24 cm. |
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| 参考书目: | Includes bibliographies. |