Showing 1 - 2 results of 2 for search 'TROEH, Frederick R.', query time: 0.01s Refine Results
  1. 1
    Soil and water conservation: for productivity and environmental protection

    Soil and water conservation: for productivity and environmental protection by TROEH, Frederick R.

    Published 1980
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  2. 2
    Soils and soil fertility.-- Ed.3

    Soils and soil fertility.-- Ed.3 by THOMPSON, Louis M.

    Published 1975
    Other Authors: “…TROEH, Frederick R.…”
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