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  1. Soil survey of Porter County, Indiana / by T.M. Bushnell and Wendell Barrett.
    By: Bushnell, T. M. (Thomas Mark), - Barrett, Wendell. - Indiana. Dept. of Geology and Natural Resources. - United States. Bureau of Soils.
    Publication info: Washington :Govt. Print. Office,1918.
    Holding Institution: University of California Libraries (archive.org)
    Subjects: Indiana  Porter County  Soil surveys  Soils  
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