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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Cobb, J. Stanley.
    Publication info: 1917
    Holding Institution: UMass Amherst Libraries
    Subjects: Agronomy  Effect of sulphur on  Masters  Plants  Theses  
  2. By: Mitchell, Charles Clifford,
    Publication info: 1980
    Holding Institution: University of Florida, George A. Smathers Libraries
    Subjects: Dissertations, Academic  Effect of sulphur on  Florida  Plants  Soil science  Soil Science thesis Ph. D  Soils  Sulphur content  UF