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  1. Amending Soils with Lime or Gypsum (NRCS 333)

    production or when the field phosphorus index rates high or very high. One field experiment in Ohio measured ...

  2. Borrowed Ground

    be effective in increasing urban agriculture. The land suitability index used in this research shows ...

  3. History of the Mellinger Farm  U.S., Indexed County Land Ownership Maps, 1860-1918  [database on-line]. Provo, UT, USA: ...