 | Income United States. | (2) |
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 | Rural-urban population, income, and employment : a simulation of alternative futures / . Edwards, Clark, 1925- 1n Washington, D.C. : Economic Research Service, U.S. Dept. of Agriculture, 1971. | |
| People with farm earnings : sources and distribution of income / Reinsel]. Reinsel, Edward I., 1931- 4n Washington, D.C. : Economic Research Service, U.S. Dept. of Agriculture, 1972. | |
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