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  1. 1

    Priorities for alleviating soil-related constraints to food production in the tropics

    Published 1980
    Book

    Priorities for alleviating soil-related constraints to food production in the tropics
  2. 2

    Chemistry of the soil. by Bear, Firman Edward 1884-

    Published 1964
    Book

    Chemistry of the soil.
  3. 3

    Soil erosion and its control by Ayres, Quincy Claude 1891-

    Published 1936
    Book

    Soil erosion and its control

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