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    II Reunión Técnica Nacional de Labranza Conservacionista : siembra directa - labranza reducida.

    Published 1979
    Conference Proceeding Book
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    Análisis económico de proyectos agrícolas / by Gittinger, J. Price

    Published 1989
    Book
  4. 4

    Project appraisal and planning for developing countries / by Little, I. M.

    Published 1980
    Book
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    Using shadow prices /

    Published 1977
    Book
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    Economics and public policy in water resource development /

    Published 1966
    Book
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