Search results for: Gertsma, James M.

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    Soil survey of Humboldt County, Iowa

    Authors: Wisner, Robin J.
    Published: U.S. Department of Agriculture, Natural Resources Conservation Service, 2005
    Other Authors: “…Gertsma, James M.…”
    Physical Description: 1 portfolio (1 volume, 3 unnumbered pages, 45 folded pages of plates) : illustrations, maps (some color) ; 31 cm, Also available via Internet from the NRCS Soil Data Mart web site. Address as of 6/30/06: http://soildatamart.nrcs.usda.gov/Manuscripts/IA091/1/humboldt%5FIA.pdf; current access available via PURL.
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