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Start Over You searched for: Author President of United States Remove constraint Author: President of United States Catalog Issue Year Decade 1940 - 1949 Remove constraint Catalog Issue Year Decade: 1940 - 1949

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5. Radiation Laboratory, Massachusetts Institute of Technology; Reports. M-217. Instructions for types TXF-17GA, TFX-19GA, TFX-30EC, TFX-31EC, model 51 and similar types of micrometer frequency meters. Supplement to Report M-217 on frequency meters TFX-40GA, TFX-41Ga, and TFX-43EC. n.d.

6. Ailes d'Amerique. n. p. n. d.

7. Annual report as of June 30, 1947.