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  1. 41
    Guidelines for economic appraisal of watershed managementprojects /

    Guidelines for economic appraisal of watershed managementprojects / 由 Gregersen, H. M.

    出版 1987
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  2. 42
    Watershed management field manual : slope treatment measures and practices.

    Watershed management field manual : slope treatment measures and practices.

    出版 1988
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  3. 43
    More water for arid lands : promising technologies and research opportunities : report of an ad hoc panel of the Advisory Committee on Technology Innovation, Board on Science and Technology for International Development, Commission on International Relations.

    More water for arid lands : promising technologies and research opportunities : report of an ad hoc panel of the Advisory Committee on Technology Innovation, Board on Science and T...

    出版 1974
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  4. 44
    Soil erosion by water in the tropics /

    Soil erosion by water in the tropics / 由 El-Swaify, S. A.

    出版 1982
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  5. 45
    Conservation and you /

    Conservation and you / 由 Hitch, Allen S.

    出版 1964
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  6. 46
    Water treatment principles and design /

    Water treatment principles and design /

    出版 1985
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  7. 47
    Water for every farm : Yeomans keyline plan /

    Water for every farm : Yeomans keyline plan /

    出版 1993
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  8. 48
    International Symposium on Water Erosion, Sedimentation and Resource Conservation, October 9-13, 1990, Dehradun, India.

    International Symposium on Water Erosion, Sedimentation and Resource Conservation, October 9-13, 1990, Dehradun, India.

    出版 1990
    Conference Proceeding 圖書

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  9. 49
    Water treatment handbook

    Water treatment handbook

    出版 1979
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  10. 50
    The independent home : living well with power from the sun, wind and water /

    The independent home : living well with power from the sun, wind and water / 由 Potts, Michael

    出版 1993
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  11. 51
    Overcoming myths about soil and water impacts of tropicalforest land uses (Reprint No. 86) /

    Overcoming myths about soil and water impacts of tropicalforest land uses (Reprint No. 86) / 由 Hamilton, Lawrence S.

    出版 1985
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  12. 52
    Myths and science of soils of the tropics : proceedings of an international symposium sponsored by Division A-6 of the American Society of Agronomy, the World Association of Soil and Water Conservation, and the Soil and Water Conservation Society, in Las Vegas, Nevada, 17 Oct. 1989 /

    Myths and science of soils of the tropics : proceedings of an international symposium sponsored by Division A-6 of the American Society of Agronomy, the World Association of Soil and Water Conservation, and the Soil and Water Conservation Society, in Las Vegas, Nevada, 17 Oct. 1989 /

    出版 1992
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  13. 53
    Standard model designs for rural water supplies /

    Standard model designs for rural water supplies /

    出版 1986
    圖書

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  14. 54
    Energy and water management in western irrigated agriculture /

    Energy and water management in western irrigated agriculture /

    出版 1986
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  15. 55
    A framework for land evaluation

    A framework for land evaluation

    出版 1977
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  16. 56
    Aquatic plants for water treatment and resource recovery /

    Aquatic plants for water treatment and resource recovery /

    出版 1987
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    Conference Proceeding 圖書

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  17. 57
    Forest conservation in new zealand.

    Forest conservation in new zealand.

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  18. 58
    Planning human activities on protected natural ecosystems : the conservation unit approach to the planning and management of national parks and reserves in Kenya based on the Nairobi National Park ecosystem /

    Planning human activities on protected natural ecosystems : the conservation unit approach to the planning and management of national parks and reserves in Kenya based on the Nairo... 由 Lusigi, Wlater Jami

    出版 1978
    電子書

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  19. 59
    Habitat modelling of Hawaiian streams /

    Habitat modelling of Hawaiian streams /

    出版 1988
    未知

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  20. 60
    Mine waste management : a resource for mining industry professionals, regulators, and consulting engineers /

    Mine waste management : a resource for mining industry professionals, regulators, and consulting engineers /

    出版 1992
    圖書

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