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NIST time and frequency bulletin, no. 561:



Eyvon M Petty
- NIST IR 6630-09
Report Number
NIST IR 6630-09


Petty, E. (2004), NIST time and frequency bulletin, no. 561:, , National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed April 14, 2024)
Created January 1, 2004, Updated May 20, 2023