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  1. By: Brown, Ray W.
    Publication info: Ogden, Utah, 1970
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Equipment and supplies  Hygrometry  Measurement  Plant-soil relationships  Plant-water relationships  Soil moisture  
  2. By: Coffin, James Henry,
    Publication info: Washington, Smithsonian institution, 1856
    Holding Institution: University of California Libraries
    Subjects: Hygrometry