Showing 1 - 2 results of 2 for search 'Clarke , G.R', query time: 0.00s Refine Results
  1. 1
    The study of the soil in the field

    The study of the soil in the field by Clarke , G.R

    Published 1936
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  2. 2
    Soil acidity and its relation to the production of nitrate and ammonia in woodland soils

    Soil acidity and its relation to the production of nitrate and ammonia in woodland soils by Clarke , G.R

    Published 1924
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