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1
NBS time and frequency dissemination services
[Washington] : Dept. of Commerce, National Bureau of Standards : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1979Format: Government Document Book
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2
NBS time and frequency dissemination services
Washington : Dept. of Commerce, National Bureau of Standards, 1976
1976 ed.Format: Government Document Book
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3
NBS time and frequency dissemination services
Washington :; Washington : Dept. of Commerce, National Bureau of Standards,; U.S. Dept. of Commerce, National Bureau of Standards, 1976
1976 ed.Format: Government Document Book
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4
Time and frequency users' manual
[Washington] : Dept. of Commerce, National Bureau of Standards : for sale by the Supt. of Docs., U.S. Govt. Print. Off, 1979Format: Government Document Book
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5
Time and frequency users' manual
[Washington] : Dept. of Commerce, National Bureau of Standards : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1979Format: Government Document Book
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