Books in Category: Environmental Issues
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Cape Cod
Henry David Thoreau
1328 downloads
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Climate and Time in Their Geological Relations
James Croll
1319 downloads
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The Andes of Southern Peru
Isaiah Bowman
1257 downloads
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Forest Trees of Texas: How to Know Them
Wilbur R. Mattoon and C. B. Webster
1233 downloads
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Cuba Past and Present
Richard Davey
1227 downloads
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Conservation of marine birds of northern North America:
1226 downloads
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Mammals of Mesa Verde National Park, Colorado
Sydney Anderson
1218 downloads
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The Geographical Distribution of Animals, Volume 2
Alfred Russel Wallace
1216 downloads
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A year at the shore
Philip Henry Gosse
1215 downloads
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A History of Epidemic Pestilences
Edward Bascome
1204 downloads
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The National Geographic Magazine, Vol. III. (Complete), 1891
Various
1204 downloads
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The Beauties of Nature, and the Wonders of the World We Live In
Sir John Lubbock
1202 downloads
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Climatic Changes: Their Nature and Causes
Ellsworth Huntington and Stephen Sargent Visher
1198 downloads
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The Unexploited West
Ernest J. Chambers
1196 downloads
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Rural Hygiene
Henry N. Ogden
1179 downloads
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Mosaic of New Mexico's Scenery, Rocks, and History
1179 downloads
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Our National Parks
John Muir
1176 downloads
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North America
Israel C. Russell
1166 downloads
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Western Himalaya and Tibet
Thomas Thomson
1160 downloads
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Travels into North America, Volume 1 (of 3)
Pehr Kalm
1158 downloads
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The dawn of astronomy
Sir Norman Lockyer
1151 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
1147 downloads
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Proceedings [of the] fourth National Conservation Congress [at] Indianapolis, October 1-4, 1912
United States. National Conservation Congress
1135 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
1135 downloads
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Bird-Lore, Volume I—1899
Various
1114 downloads