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• Pendergast, W. L.; Tuma, E. C.; Foster, B.
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  Evaluation of Refractory Qualities of Concretes for Jet Aircraft Warm-Up, Power Check, Maintenance Aprons, and Runways. Quarterly Report.
  National Bureau of Standards, Gaithersburg, MD
  NBS 7197
  Department of the Navy, Washington, DC, NBS 7197
  July 20, 1961
  9 p.

• Ryan, J. V.; Tuma, E. C.; Bettum, W. N.
  view article (1.0)

  Evaluation of Refractory Qualities of Concretes for Jet Aircraft Warm-Up, Power Check Maintenance Aprons, and Runways. Quarterly Report.
  National Bureau of Standards, Gaithersburg, MD
  NBS 8342
  Department of the Navy, Washington, DC, NBS 8342
  April 28, 1964
  3 p.