Showing 1 - 2 results of 2 for search 'Essen, Louis' Refine Results
  1. 1
    The measurement of frequency / by L. Essen, E.G. Hope, K. Morris.
    by Essen, Louis
    Published 1961
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  2. 2
    The measurement of frequency and time interval / (by) L. Essen (for the) National Physical Laboratory.
    by Essen, Louis
    Published 1973
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