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5
An Empirical Investigation of the Competitive Effects of Do..
NBER working paper series, no. w8197
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6
Twenty-second annual report of the National Advisory Commit..
United States congressional serial set ; serial set no. 10106;Senate document / 75th Congress, 1st session. Senate ; no. 3
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7
Aeronautics. Twentieth annual report of the National Adviso..
United States congressional serial set ; serial set no. 9911;Senate document / 74th Congress, 1st session. Senate ; no. 3
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8
Aeronautics. Thirteenth annual report of the National Advis..
United States congressional serial set ; serial set no. 8873;Senate document / 70th Congress, 1st session. Senate ; no. 3
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9
Aeronautics. Twelfth annual report of the National Advisory..
United States congressional serial set ; serial set no. 8715;Senate document / 69th Congress, 2nd session. Senate ; no. 164