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- catalog contributor b12641830.
- catalog created "1953.".
- catalog date "1953".
- catalog date "1953.".
- catalog dateCopyrighted "1953.".
- catalog extent "p. 508-535 ;".
- catalog isPartOf "Research bulletin (Iowa Agricultural Experiment Station) ; 401.".
- catalog isPartOf "Research bulletin ; 401".
- catalog issued "1953".
- catalog issued "1953.".
- catalog language "eng".
- catalog publisher "Ames, Iowa : Agricultural Experiment Station, Iowa State College,".
- catalog spatial "Iowa.".
- catalog subject "Agricultural productivity Iowa.".
- catalog subject "Silt loam Iowa.".
- catalog subject "Soil management Iowa.".
- catalog title "Productivity and income of labor and capital on Marshall silt loam farms in relation to conservation farming / by Earl O. Heady.".
- catalog type "text".