Employment by Industry, United States Counties: 1940, 1950, 1960, 1970
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https://data.socialsciences.cornell.edu/citation?persistentId=doi:10.6077/J5/LRD3U0
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<p>The volume presents employment by industry from the decennial censuses of population for 1940, 1950, 1960, and 1970. Thirty-five identified civilian industries are presented for each area for 1970, 1960, and 1950, together with 30 groups for 1940. Introductory material deals with the definition of employment, industrial classification of civilian employees, place of residence, seasonal factor, geographic classification, and related analytical capabilities of various branches of the U.S. Department of Commerce. (ERIC 3/9/2015)</p>
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CCSS Data Repository
创建时间：
2018-07-12
