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  1. 1
    The effectiveness of land degradation policies and programs : report of the House of Representatives Standing Committee on Environment, Recreation and the Arts.
    Liburua
    Argitaratua 1989
    Gogokoenen artean sartu
    Gorde:
  2. 2
    Land degradation & development.
    Aldizkaria
    Argitaratua 1996
    Full text (Wiley Online Library)
    Testu osoa
    Gogokoenen artean sartu
    Gorde:
  3. 3
    Desertification and land degradation in the European Mediterranean /
    Liburua
    nork Perez-Trejo, F. (Francisco)
    Argitaratua 1994
    Gogokoenen artean sartu
    Gorde:
  4. 4
    Sustaining the agricultural resource base : a paper prepared by an independent working group for consideration by the Prime Minister's Science and Engineering Council at its twelfth meeting, 23 June 1995.
    Liburua
    Argitaratua 1995
    Gogokoenen artean sartu
    Gorde:
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