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- catalog contributor b11155510.
- catalog created "1968.".
- catalog date "1968".
- catalog date "1968.".
- catalog dateCopyrighted "1968.".
- catalog extent "14 p. :".
- catalog isPartOf "NBS special publication ; 236.".
- catalog isPartOf "National Bureau of Standards special publication ; 236".
- catalog issued "1968".
- catalog issued "1968.".
- catalog language "eng".
- catalog publisher "Washington : U.S. Dept of Commerce, National Bureau of Standards,".
- catalog spatial "United States.".
- catalog subject "Frequency standards.".
- catalog subject "Radio frequency Standards United States.".
- catalog subject "Time Systems and standards United States.".
- catalog subject "Time-signals.".
- catalog title "NBS frequency and time broadcast services : radio stations WWV, WWVH, WWVB, WWVL.".
- catalog type "text".