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  1. 1

    Draught animals in rural development proceedings of an international research symposium, Cipanas, Indonesia, 3-7 July 1989

    Publicado em 1989
    Livro

    Draught animals in rural development proceedings of an international research symposium, Cipanas, Indonesia, 3-7 July 1989
  2. 2

    Agricultural mechanization and the evolution of farming systems in sub-Saharan Africa por Pingali, Prabhu L. 1955-

    Publicado em 1987
    Livro

    Agricultural mechanization and the evolution of farming systems in sub-Saharan Africa

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