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＜図書＞
American agriculture, 1899-1939; a study of output, employment and productivity

出版者	New York : National Bureau of Economic Research
出版年	1942
大きさ	440 p. 24 cm
著者標目	Barger, Harold Landsberg, Hans H.
件　名	Agriculture -- United States  全ての件名で検索 Agriculture -- Economic aspects  全ての件名で検索
一般注記	Facsimile of the original book, produced by University Microfilms. ＼ Includes bibliographical references.

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