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  1. Report on the lands of the arid region of the United States, with a more detailed account of the lands of Utah
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    Willis Drummond
    Report on the lands of the arid region of the United States, with a more detailed account of the lands of Utah
  2. Ilex cassine, the aboriginal North American tea

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    Edwin M. Hale
    Ilex cassine, the aboriginal North American tea

  3. The ionian cycle
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    William Tenn
    The ionian cycle
  4. The new northland
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    L. P. Gratacap
    The new northland
  5. The farm and the woodlot
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    J. E. Barton
    The farm and the woodlot

  6. Uittomiehiä ja kullankaivajia

    Stewart Edward White

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    Stewart Edward White
    Uittomiehiä ja kullankaivajia
  7. Preservation of forests as a measure of public safety
Address before the 17th National Irrigation Congress, Spokane, Wash., August, 1909
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    Lourenço Baeta Neves
    Preservation of forests as a measure of public safety
Address before the 17th National Irrigation Congress, Spokane, Wash., August, 1909
  8. Newer ideals of peace
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    Jane Addams
    Newer ideals of peace
  9. Climate—Incorporated
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    George O. Smith
    Climate—Incorporated
  10. Practical vegetarian cookery
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    Yazar Bilinmiyor
    Practical vegetarian cookery
  11. Nature's invitation: Notes of a bird-gazer, North and South
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    Bradford Torrey
    Nature's invitation: Notes of a bird-gazer, North and South
  12. Proceedings [of the] fourth National Conservation Congress [at] Indianapolis, October 1-4, 1912
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    Yazar Bilinmiyor
    Proceedings [of the] fourth National Conservation Congress [at] Indianapolis, October 1-4, 1912
  13. Greener than spruce
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    Herbert Farris
    Greener than spruce
  14. The northern whale-fishery
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    William Scoresby
    The northern whale-fishery
  15. The Ohio naturalist, Vol. 1, No. 8, June 1901
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    Yazar Bilinmiyor
    The Ohio naturalist, Vol. 1, No. 8, June 1901
  16. The garden as a picture
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    Beatrix Farrand
    The garden as a picture
  17. Am Teich- und Flußufer
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    Arabella B. Buckley
    Am Teich- und Flußufer
  18. Bäume und Sträucher
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    Arabella B. Buckley
    Bäume und Sträucher
  19. Aus der Schneegrube
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    Wilhelm Bölsche
    Aus der Schneegrube
  20. Coal and the coal mines
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    Homer Greene
    Coal and the coal mines
  21. The Ohio naturalist, Vol. 1, No. 4, February 1901
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    Yazar Bilinmiyor
    The Ohio naturalist, Vol. 1, No. 4, February 1901
  22. The filtration of public water-supplies
Third edition, revised and enlarged.
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    Allen Hazen
    The filtration of public water-supplies
Third edition, revised and enlarged.
  23. Aspects of nature, in different lands and different climates (Vol. 2 of 2)
with scientific elucidations
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    Alexander von Humboldt
    Aspects of nature, in different lands and different climates (Vol. 2 of 2)
with scientific elucidations
  24. Climate—disordered
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    Sam Merwin
    Climate—disordered
  25. Water and power for San Francisco from Hetch-Hetchy Valley in Yosemite National Park
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    Martin Samuel Vilas
    Water and power for San Francisco from Hetch-Hetchy Valley in Yosemite National Park
  26. The swamp was upside down
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    Murray Leinster
    The swamp was upside down
  27. Earth dams, a study
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    Burr Bassell
    Earth dams, a study
  28. The micro-organisms of the soil
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    Rothamsted Experimental Station
    The micro-organisms of the soil
  29. Proxy Planeteers
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    Edmond Hamilton
    Proxy Planeteers
  30. Barrier beaches of the Atlantic coast
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    Frederick J. H. Merrill
    Barrier beaches of the Atlantic coast
  31. The Salton Sea: An account of Harriman's fight with the Colorado River
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    George Kennan
    The Salton Sea: An account of Harriman's fight with the Colorado River
  32. Good citizenship
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    Grover Cleveland
    Good citizenship
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