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- Agriculture--Economic aspects--United States (27)
- Agriculture and state--United States (12)
- New Deal, 1933-1939 (7)
- Agriculture--United States (5)
- Agricultural industries--United States (4)
- Agricultural industries (3)
- Agriculture--Economic aspects--1945- (3)
- United States--Rural conditions (2)
- United States. Agricultural Adjustment Administration (2)
- Agricultural credit--United States (1)
- Agricultural laborers--United States (1)
- Agriculture--Developing countries (1)
- Agriculture--United States--Finance (1)
- Agriculture--United States--History (1)
- Cooperation--United States (1)
- Developing countries--Commerce--United States (1)
- Family farms--United States (1)
- Farm life (1)
- Farmers--United States (1)
- Farms--United States (1)
- Food supply--United States (1)
- National Farmers' Alliance and Industrial Union (1)
- Patrons of husbandry (1)
- People's Party of the United States (1)
- Produce trade--Government policy--United States (1)
- Produce trade--United States (1)
- Railroads and state--United States (1)
- Regional planning--United States (1)
- Rural development--United States (1)
- Social problems (1)
- Sociology, Rural (1)
- United States Agricultural Adjustment Administration (1)
- United States--Commerce--Developing countries (1)
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- United States--Economic policy--1933-1945 (1)
- United States--Politics and government--1865-1900 (1)
- United States--Population (1)
- United States--Social conditions--1933-1945 (1)
- Urban-rural migration--United States (1)
- Wheat trade--United States (1)
- Wheat--United States (1)
- World War, 1939-1945--Food supply (1)