U.S. government research reports.
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| 新標題: | U.S. Government research and development reports |
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| 上一標題: | Bibliography of technical reports |
| 企業作者: | |
| 格式: | Government Document 序列 |
| 語言: | English |
| 出版: |
[Washington]
U.S. Dept. of Commerce, Office of Technical Services.
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| 主題: |