Digital data transmission tests on voice channels /
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| 企业作者: | , , |
|---|---|
| 格式: | Government Document 图书 |
| 语言: | English |
| 出版: |
Washington :
NBS : for sale by the Supt. of Docs., U.S. Govt. Print. Off.,
1977.
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| 丛编: | NBS special publication ;
480-19. |
| 主题: |
CARM 1 Store
| 索引号: |
A3:AD21E0 F05720 |
|---|---|
| 复印件 1 | 可用 预订 |