Books in Category: Environmental Issues
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Forest Trees of Texas: How to Know Them
Wilbur R. Mattoon and C. B. Webster
1047 downloads
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A History of Epidemic Pestilences
Edward Bascome
1046 downloads
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American Weasels
E. Raymond Hall
1045 downloads
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The Municipal and Sanitary Engineer's Handbook
H. Percy Boulnois
1032 downloads
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Mosaic of New Mexico's Scenery, Rocks, and History
1018 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
1006 downloads
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Discoveries in Australia, Volume 2
John Lort Stokes
999 downloads
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Commercial Geography
Jacques W. Redway
996 downloads
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The Taleef Shereef; Or, Indian Materia Medica
985 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
981 downloads
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Island Life; Or, The Phenomena and Causes of Insular Faunas and Floras
Alfred Russel Wallace
962 downloads
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Cuba Past and Present
Richard Davey
961 downloads
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Observations of a Naturalist in the Pacific Between 1896 and 1899, Volume 2
H. B. Guppy
960 downloads
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The useful trees of northern Nigeria
Hugh Vandervaes Lely
957 downloads
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Birds useful and birds harmful
J. A. Owen and Ottó Herman
954 downloads
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Travels into North America, Volume 1 (of 3)
Pehr Kalm
946 downloads
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Climate and Time in Their Geological Relations
James Croll
937 downloads
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The Beauties of Nature, and the Wonders of the World We Live In
Sir John Lubbock
928 downloads
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North America
Israel C. Russell
926 downloads
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A year at the shore
Philip Henry Gosse
921 downloads
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The National Geographic Magazine, Vol. III. (Complete), 1891
Various
916 downloads
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Proceedings of the second National Conservation Congress at Saint Paul, September 5-8, 1910
United States. National Conservation Congress
913 downloads
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Western Himalaya and Tibet
Thomas Thomson
908 downloads
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The Storm-Cloud of the Nineteenth Century
John Ruskin
903 downloads
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Common trees of Pennsylvania
Joseph E. Ibberson, A. B. Mickalitis, J. E. Aughenbaugh, and C. L. Morris
901 downloads