Books in Category: Environmental Issues
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Common trees of Pennsylvania
Joseph E. Ibberson, A. B. Mickalitis, J. E. Aughenbaugh, and C. L. Morris
963 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
956 downloads
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Missions au Sahara, tome 1 : Sahara algérien (French)
E. F. Gautier
954 downloads
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Mutual Aid: A Factor of Evolution
kniaz Petr Alekseevich Kropotkin
950 downloads
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The Polar World
G. Hartwig
937 downloads
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The Development of the Feeling for Nature in the Middle Ages and Modern Times
Alfred Biese
936 downloads
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The Arctic World : Its plants, animals, and natural phenomena. With a historical sketch of Arctic discovery, down to the British polar expedition: 1875-76.
Anonymous
933 downloads
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Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 3
Alexander von Humboldt and Aimé Bonpland
927 downloads
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Men of the Old Stone Age: Their Environment, Life and Art
Henry Fairfield Osborn
924 downloads
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The Malay Archipelago, Volume 2
Alfred Russel Wallace
916 downloads
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The Natural History of Selborne
Gilbert White
903 downloads
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The romance of natural history, second series
Philip Henry Gosse
896 downloads
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The Game Fish, of the Northern States and British Provinces
Robert Barnwell Roosevelt
895 downloads
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Excursions
Henry David Thoreau
892 downloads
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A supplementary report on the results of a special inquiry into the practice of interment in towns.
Edwin Chadwick
891 downloads
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Island Life; Or, The Phenomena and Causes of Insular Faunas and Floras
Alfred Russel Wallace
887 downloads
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Proceedings [of the] fourth National Conservation Congress [at] Indianapolis, October 1-4, 1912
United States. National Conservation Congress
875 downloads
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Venezuela
Leonard V. Dalton
872 downloads
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The Storm-Cloud of the Nineteenth Century
John Ruskin
871 downloads
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Rural Hygiene
Henry N. Ogden
869 downloads
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The Naturalist in La Plata
W. H. Hudson
867 downloads
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The useful trees of northern Nigeria
Hugh Vandervaes Lely
866 downloads
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The National Geographic Magazine, Vol. III. (Complete), 1891
Various
835 downloads
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The Story of Man In Yellowstone
Merrill D. Beal
832 downloads
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A History of Epidemic Pestilences
Edward Bascome
831 downloads