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Start Over You searched for: Publisher National Bureau of Standards Remove constraint Publisher: National Bureau of Standards Publish Year Decade 1930 - 1939 Remove constraint Publish Year Decade: 1930 - 1939

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243. Air conditioning, publications of interest.

245. Metals do not crystallize under vibration.

247. Abrasives. Coated abrasive products.

248. Ages. Forged axes.