Books in Category: Environmental Issues
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Bird Day; How to prepare for it
Charles Almanzo Babcock
743 downloads
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Appletons' Popular Science Monthly, November 1898
Various
740 downloads
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One Hundred Years in Yosemite: The Story of a Great Park and Its Friends
Carl Parcher Russell
739 downloads
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Volcanic Islands
Charles Darwin
732 downloads
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Mammals of the Southwest Mountains and Mesas
George Olin
731 downloads
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Climatic Changes: Their Nature and Causes
Ellsworth Huntington and Stephen Sargent Visher
730 downloads
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Worldwide Effects of Nuclear War: Some Perspectives
United States. Arms Control and Disarmament Agency
729 downloads
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Ohio Arbor Day 1913: Arbor and Bird Day Manual
729 downloads
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The Taleef Shereef; Or, Indian Materia Medica
729 downloads
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The Naturalist in La Plata
W. H. Hudson
722 downloads
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Ragnarok : the Age of Fire and Gravel
Ignatius Donnelly
721 downloads
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Histoire d'un ruisseau (French)
Elisée Reclus
720 downloads
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Use of tobacco among North American Indians
Ralph Linton
719 downloads
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The Training of a Forester
Gifford Pinchot
718 downloads
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Migration of Birds (1979)
Frederick Charles Lincoln and Steven R. Peterson
717 downloads
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A Report on Washington Territory
William Henry Ruffner
716 downloads
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Travels into North America, Volume 3 (of 3)
Pehr Kalm
715 downloads
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The Geologic Story of Colorado National Monument
Stanley William Lohman
714 downloads
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The Natural History of Wiltshire
John Aubrey
711 downloads
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Cavity-Nesting Birds of North American Forests
Virgil E. Scott, Keith E. Evans, David R. Patton, and Charles P. Stone
711 downloads
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Acid Rain and Our Nation's Capital: A Guide to Effects on Buildings and Monuments
E. S. McGee
709 downloads
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Nature Mysticism
John Edward Mercer
709 downloads
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The Healthy Life, Vol. V, Nos. 24-28
Various
703 downloads
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Tableau du climat et du sol des États-Unis d'Amérique
(French)
C.-F. Volney
702 downloads
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Proceedings of the second National Conservation Congress at Saint Paul, September 5-8, 1910
United States. National Conservation Congress
696 downloads