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  1. 1
    by Judson, Lewis Van Hagen, 1893-
    Published 1956
    “...United States National Bureau of Standards ;...”
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    Units and systems of weights and measures : their origin, development, and present status.
  2. 2
    by Judson, Lewis Van Hagen, 1893-
    Published 1956
    “...United States National Bureau of Standards ;...”
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    Calibration of line standards of length and measuring tapes at The National Bureau of Standards.

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