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General report : unemployment by occupation, April, 1930, with returns from the special census of unemployment, January, 1931
(Fifteenth census of the United States, 1930 / U.S. Department of Commerce, Bureau of the Census ; . Unemployment ; v. 2)

データ種別	図書
出版者	Washington : U.S. Govt. Print. Off.
出版年	1932
本文言語	英語
大きさ	vi, 618 p. : ill. ; 24 cm

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