Books in Category: Environmental Issues
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Commercial Geography
Jacques W. Redway
1167 downloads
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American Weasels
E. Raymond Hall
1161 downloads
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Observations of a Naturalist in the Pacific Between 1896 and 1899, Volume 2
H. B. Guppy
1142 downloads
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Climate and Time in Their Geological Relations
James Croll
1128 downloads
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Forest Trees of Texas: How to Know Them
Wilbur R. Mattoon and C. B. Webster
1126 downloads
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Proceedings [of the] fourth National Conservation Congress [at] Indianapolis, October 1-4, 1912
United States. National Conservation Congress
1122 downloads
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A History of Epidemic Pestilences
Edward Bascome
1122 downloads
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Conservation of marine birds of northern North America:
1109 downloads
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Our National Parks
John Muir
1097 downloads
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Cuba Past and Present
Richard Davey
1082 downloads
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A year at the shore
Philip Henry Gosse
1049 downloads
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The Beauties of Nature, and the Wonders of the World We Live In
Sir John Lubbock
1046 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
1043 downloads
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Mosaic of New Mexico's Scenery, Rocks, and History
1042 downloads
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The National Geographic Magazine, Vol. III. (Complete), 1891
Various
1034 downloads
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The Geographical Distribution of Animals, Volume 2
Alfred Russel Wallace
1032 downloads
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North America
Israel C. Russell
1024 downloads
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Rural Hygiene
Henry N. Ogden
1023 downloads
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Proceedings of the second National Conservation Congress at Saint Paul, September 5-8, 1910
United States. National Conservation Congress
1023 downloads
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Western Himalaya and Tibet
Thomas Thomson
1006 downloads
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Travels into North America, Volume 1 (of 3)
Pehr Kalm
996 downloads
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Climatic Changes: Their Nature and Causes
Ellsworth Huntington and Stephen Sargent Visher
995 downloads
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Bird-Lore, Volume I—1899
Various
989 downloads
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The dawn of astronomy
Sir Norman Lockyer
988 downloads
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The Unexploited West
Ernest J. Chambers
985 downloads