Dangos 1 - 2 canlyniadau o 2 ar gyfer chwilio 'Wackernagel, Mathis', amser ymholiad: 0.00e Refine Results1
  1. 1
    Sharing nature's interest : ecological footprints as an indicator of sustainability
    Ychwanegu at ffefrynnau
    Wedi'i Gadw mewn:
  2. 2
    Our ecological footprint : reducing human impact on the earth
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    Wedi'i Gadw mewn:
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