NBS frequency and time broadcast services: radio stations WWV, WWVH, WWVB [and] WWVL.
| Corporate Author: | |
|---|---|
| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington,
U.S. Dept of Commerce, National Bureau of Standards,
1968.
|
| Edition: | [Rev. ed.] |
| Series: | NBS special publication ;
236, 1968 ed. |
| Subjects: |
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