Books in Category: Environmental Issues
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Polarforskningen (Swedish)
A. G. Nathorst
325 downloads
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Crater Lake National Park, Oregon (1958)
United States. National Park Service
324 downloads
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In het Balkanbergland van Bulgarije
(Dutch)
L. de Launay
324 downloads
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Montezuma Castle National Monument, Arizona (1959)
United States. National Park Service
324 downloads
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The Grand Cañon of the Colorado
John Muir
324 downloads
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The Survey, Volume 30, Number 1, April 5, 1913
Various
324 downloads
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Volcanoes of the United States
Steven R. Brantley
323 downloads
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Wild Animals of the Rockies
James P. Gilligan
322 downloads
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Burton Island State Park: Guide to the Interpretive Nature Trail and Hiking Trail
Stephen Antil
321 downloads
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Landesverein Sächsischer Heimatschutz — Mitteilungen Band XI, Heft 1-3 : Monatsschrift für Heimatschutz und Denkmalpflege (German)
321 downloads
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Forestry for Farmers
B. E. Fernow
320 downloads
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The Mentor: The Story of Coal, vol. 6, Num. 6, Serial No. 154, May 1, 1918
Charles Fitzhugh Talman
320 downloads
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The BYU Solar Cooker/Cooler
Steven E. Jones
319 downloads
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Report on the New York Botanical Garden
Olmsted Brothers
319 downloads
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茶經 (Chinese)
Yu Lu
319 downloads
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Dell'antico stato del lago di Pusiano nell'alto Milanese (Italian)
Carlo Redaelli
318 downloads
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Seventeen Species of Bats Recorded from Barro Colorado Island, Panama Canal Zone
E. Raymond Hall and William B. Jackson
318 downloads
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Het Boschvolkje (Dutch)
William J. Long
318 downloads
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Landesverein Sächsischer Heimatschutz — Mitteilungen Band XII, Heft 10-12 : Monatsschrift für Heimatschutz und Denkmalpflege (German)
317 downloads
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Landesverein Sächsischer Heimatschutz — Mitteilungen Band XIV, Heft 3-4 : Monatsschrift für Heimatschutz, Volkskunde und Denkmalpflege (German)
317 downloads
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Shoshone National Forest, Wyoming
United States. Forest Service
317 downloads
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The Vailan or annular theory: A synopsis of Prof. I. N. Vail's argument in support of the claim that this Earth once possessed a Saturn-like system of rings
Stephen Bowers
316 downloads
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De koraal-eilanden: fragment uit het dagboek van een natuuronderzoeker
(Dutch)
Charles Darwin
315 downloads
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Wayside Sketches in Tasmania
S. H. Wintle
315 downloads
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The swamp was upside down
Murray Leinster
314 downloads