Books in Category: Environmental Issues
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A Brief History of Forestry.
B. E. Fernow
1220 downloads
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North America
Israel C. Russell
1217 downloads
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Your National Parks, with Detailed Information for Tourists
Enos A. Mills and Laurence Frederick Schmeckebier
1142 downloads
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Whales, dolphins, and porpoises of the western North Atlantic : a guide to their identification
Stephen Leatherwood, David K. Caldwell, and Howard Elliott Winn
1138 downloads
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Proceedings of the second National Conservation Congress at Saint Paul, September 5-8, 1910
United States. National Conservation Congress
1137 downloads
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Georgicon (Latin)
Virgil
1119 downloads
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Mount Everest, the Reconnaissance, 1921
Charles Howard-Bury, George Mallory, and A. F. R. Wollaston
1114 downloads
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Mammals of Mesa Verde National Park, Colorado
Sydney Anderson
1084 downloads
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Our National Parks
John Muir
1052 downloads
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Ukraine, the land and its people : an introduction to its geography
Stepan Rudnytskyi
1047 downloads
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Mutual Aid: A Factor of Evolution
kniaz Petr Alekseevich Kropotkin
1041 downloads
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The Andes of Southern Peru
Isaiah Bowman
1029 downloads
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Research methods in ecology
Frederic E. Clements
1024 downloads
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Ceylon; an Account of the Island Physical, Historical, and
Sir James Emerson Tennent
1024 downloads
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Whale hunting with gun and camera
Roy Chapman Andrews
1019 downloads
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Exploration of the Valley of the Amazon, Part 1 (of 2)
William Lewis Herndon and Lardner Gibbon
1000 downloads
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Great Disasters and Horrors in the World's History
Allen Howard Godbey
976 downloads
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Bird-Lore, Volume I—1899
Various
939 downloads
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Observations of a Naturalist in the Pacific Between 1896 and 1899, Volume 2
H. B. Guppy
933 downloads
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Farmers of Forty Centuries; Or, Permanent Agriculture in China, Korea, and Japan
F. H. King
929 downloads
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Michigan Trees: A Handbook of the Native and Most Important Introduced Species
Charles Herbert Otis
922 downloads
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Men of the Old Stone Age: Their Environment, Life and Art
Henry Fairfield Osborn
912 downloads
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Excursions
Henry David Thoreau
909 downloads
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The Theory of Environment
Armin Hajman Koller
896 downloads
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The Yellowstone National Park: Historical and Descriptive
Hiram Martin Chittenden
892 downloads