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1970 occupation and industry classification systems in terms of their 1960 occupation and industry elements
John A. Priebe · U.S. Bureau of the Census; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.]
68 sayfa · 1972
Industries / Census, 19th, 1970 / Classification / Occupations / Census, 1970
Changes between the 1950 and 1960 occupation and industry classifications
John A. Priebe · U.S. Dept. of Commerce, Bureau of the Census; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.
35 sayfa · 1968
Classification / Industries / Occupations