01225cam a2200301I 4500007290841MiAaHDL20141009010000.0m d cr bn ---auaua840807s1914 dcu f000 0 eng 15026065 sdr-uiuc6406641sdr-miu.990072908410106381(OCoLC)11028848DLCVWMIULUIUUTS545.U6 1914C 13.4:51United States.National Bureau of Standards.Measurement of time and tests of timepieces.<1st ed.> Issued December 1, 1914.Washington,Govt. Print. Off.,1914.39 p., 1 plate.ill.28 cm.Circular of the Bureau of Standards,no. 51At head of title: Department of Commerce ...S. W. Stratton, director.Mode of access: Internet.TimeSystems and standards.Clocks and watches.Online version:United States. National Bureau of Standards.Measurement of time and tests of timepieces.<1st ed.> Issued December 1, 1914.Washington, Govt. Print. Off., 1914(OCoLC)63250477800729084120101111164651.020141009010000.020141112165512.02025-01-01T19:20:26Z2025-01-01T18:30:02ZSDR-UIUCUNKNOWNloader.pl-003-020BKsdr-uiuc6406641uiugSDRUIUCuiug.30112106600668UIU6406641UIUUIUC20250101googleuiug.301121066006681914pdbibUS fed docMIUGWLA20260302googlemdp.390150772911621914pdbibUS fed doc