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  1. 1

    Towards a plan of actions for mankind needs and resources, methods of forecasting : proceedings of the world conference, Paris, 9-13 September 1974

    Publicado 1977
    Libro

    Towards a plan of actions for mankind needs and resources, methods of forecasting : proceedings of the world conference, Paris, 9-13 September 1974
  2. 2

    The ecology of natural resources por Simmons, Ian Gordon

    Publicado 1974
    Libro

    The ecology of natural resources

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