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  1. 1

    Investigations on the development potential of Oxisols of the Chapada Grande, Piauí, Brazil / by Lüken, Halo

    Published 1983
    Book
  2. 2

    Isotermas de adsorción de fósforo, ensayos en macetas y a campo para un Alfisol. by Pettri, María Diora

    Book Chapter