References
- Beale , C. L. 8 July 1984 . New York Times 8 July , 27
- Bureau of Agricultural Economics . 1950 . Generalized Types of Farming in the United States, Including a List of Counties in Type-of-farming Regions and Subregions , Agricultural Bulletin No. 3 Washington, DC : Department of Agriculture .
- Drabenstott , M. June 1986 . The long road back for U. S. agriculture June , 20 – 26 . Economic Review Federal Reserve Bank of Kansas City
- Duncan , M. and Borowski , M. December, 1984 . “Agricultural policy: objectives for a new environment” . Economic Review Federal Reserve Bank of Kansas City , : 40 – 53 .
- Hart , J. F. 1970 . “A map of the agricultural implosion” . Proceedings Association of American Geographers , 2 : 68 – 71 .
- Hart , J. F. 1975 . The Look of the Land , Englewood Cliffs, NJ : Prentice-Hall .
- Hart , J. F. 1980 . “Land use change in Piedmont County” . Annals Association of American Geographers , 70 : 492 – 527 .
- Hart , J. F. 1986 . “Change in the Corn Belt” . Geographical Review , 76 : 51 – 72 .
- Prunty , M. C. 1951 . “Recent quantitative changes in the cotton regions of the southeastern states” . Economic Geography , 27 : 189 – 208 .
- Sullivan , W. 1984 . Landprints on the Magnificent American Landscape , New York : Times Books .
- Zelinsky , W. 1978 . “Is nonmetropolitan America being repopulated? The evidence from Pennsylvania's minor civil divisions” . Demography , 15 : 13 – 39 .