1.

図書
図書
1. Recent economic changes in the United States : report of the Committee on Recent Economic Changes, of the President's Conference on Unemployment
Conference on Unemployment (1921 : Washington, D.C.). Committee on Recent Economic Changes ; National Bureau of Economic Research ; Hunt, Edward Eyre
出版情報: New York : Johnson Reprint Corp., 1966
シリーズ名: History of American economy : studies and materials for study
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2.

図書
図書
2. Recent economic changes in the United States : report of the Committee on Recent Economic Changes, of the President's Conference on Unemployment (v. 1 ; v. 2)
Herbert Hoover, chairman
出版情報: Ann Arbor : University Microfilms, 1967
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