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Unemployment returns by classes for states and counties, for urban and rural areas, and for cities with a population of 10,000 or more
(Fifteenth census of the United States, 1930 / U.S. Department of Commerce, Bureau of the Census ; . Unemployment ; v. 1)

データ種別	図書
出版者	Washington : U.S. Govt. Print. Off.
出版年	1931
本文言語	英語
大きさ	v, 1112 p. ; 24 cm

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