67 resultados para Atomic clocks.
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Mode of access: Internet.
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"CURL-2."
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Includes bibliographies.
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At head of title: v.2, NUREG-75/113; v.3, NUREG-0127.
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Mode of access: Internet.
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"Issued April 15, 1948."
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Volume I [compiled] by Charlotte E. Moore, reprinted from National Bureau of Standards Circular 467, issued 1949.