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  1. 1
    由 Holdgate, M. W.
    出版 1999
    图书

    The green web a union for world conservation
  2. 2
    出版 1991
    Visual Material

    Doctor's orders ; Greening of the Philippines ; Die hard (Fans) [videorecording]
  3. 3
    出版 1990
    图书

    American environmentalism readings in conservation history
  4. 4
    由 Nelles, H. V.
    出版 1974
    Table of contents only
    图书

    The politics of development forests, mines & hydro-electric power in Ontario, 1849-1941
  5. 5
    由 McHenry, Robert
    出版 1972
    图书

    A documentary history of conservation in America
  6. 6
    由 Nash, Roderick
    出版 1968
    图书

    The American environment readings in the history of conservation
  7. 7
    由 Smith, Frank Ellis 1918-
    出版 1966
    图书

    The politics of conservation
  8. 8
    由 Hays, Samuel P.
    出版 1959
    图书

    Conservation and the gospel of efficiency the progressive conservation movement, 1890-1920
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