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  1. 1
    Mejora de pastos en secanos semiáridos de suelos ácidos /

    Mejora de pastos en secanos semiáridos de suelos ácidos /

    Published 1984
    Book
  2. 2
    Soil chemistry /

    Soil chemistry / by Bohn, Hinrich L.

    Published 1979
    Book
  3. 3
    Soil : an introduction to soils and plant growth /

    Soil : an introduction to soils and plant growth / by Donahue, Roy L.

    Published 1977
    Book
  4. 4
    Los Suelos en relación con el crecimiento de los cultivos /

    Los Suelos en relación con el crecimiento de los cultivos / by Bear, Firman E.

    Published 1969
    Book
  5. 5
    Soils in relation to crop growth /

    Soils in relation to crop growth / by Bear, Firman E.

    Published 1965
    Book
  6. 6
    Limitations and potentials for biological nitrogen fixation in the tropics /

    Limitations and potentials for biological nitrogen fixation in the tropics /

    Published 1978
    Book
  7. 7
    Chemistry of the soil /

    Chemistry of the soil / by Bear, Firman E.

    Published 1967
    Book

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