आवृत्ति मानक: Revision history

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18 May 2023

16 May 2023

7 May 2023

  • curprev 13:4113:41, 7 May 2023alpha>Indicwiki 6,086 bytes +6,086 Created page with "{{Short description|Stable oscillator used for frequency calibration or reference}} {{Multiple issues| {{Update|date=December 2015|class=start}} {{More footnotes|date=December..."