Books in Category: Environmental Issues
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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
418 downloads
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Freak trees of the State of New York
Gurth Adelbert Whipple
416 downloads
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Landesverein Sächsischer Heimatschutz — Mitteilungen Band X, Heft 1-3 : Monatsschrift für Heimatschutz und Denkmalpflege (German)
416 downloads
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Soil and Water Pollution : Presented to the American Public Health Association at New Orleans, Dec. 1880
M. T. Runnels
415 downloads
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L'Illustration, No. 0038, 18 Novembre 1843 (French)
Various
413 downloads
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The Underworld of Oregon Caves National Monument
Roger J. Contor
412 downloads
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Montezuma Castle National Monument, Arizona (1959)
United States. National Park Service
408 downloads
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O Sprawie Glodowej W Galicyi 1866 (Polish)
Karol Langie
407 downloads
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Report on the New York Botanical Garden
Olmsted Brothers
407 downloads
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Ferns of Hawaii National Park
Douglass H. Hubbard
407 downloads
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Comparison of Methods of Sewage Purification
Theodore Clifford Phillips and Edward John Schneider
406 downloads
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Wayside Sketches in Tasmania
S. H. Wintle
404 downloads
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Dell'antico stato del lago di Pusiano nell'alto Milanese (Italian)
Carlo Redaelli
401 downloads
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Rainbow Bridge National Monument, Utah (1951)
United States. National Park Service
399 downloads
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Luonto ja ihminen: Poimintoja eri teoksista (Finnish)
John Ruskin
395 downloads
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Parks for the People
Various
393 downloads
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Island Trail at Walnut Canyon
Southwestern Monuments Association
391 downloads
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Water Power for the Farm and Country Home
David R. Cooper
390 downloads
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The northern whale-fishery
William Scoresby
388 downloads
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The wilderness
Amy E. Mack
387 downloads
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Talon-Pojan Sää- eli Ilma-Kirja (Finnish)
Anonymous
386 downloads
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Kuvaelmia itä-suomalaisten vanhoista tavoista 5: Kesäaskareet (Finnish)
Johannes Häyhä
384 downloads
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Het Yellowstone-Park (Dutch)
Hugo de Vries
378 downloads
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Report of the committee appointed to investigate the causes and extent of the late extraordinary sickness and mortality in the town of Mobile
Mobile . Committee on Causes and Extent of the Late Extraordinary Sickness and Mortality in the Town
377 downloads
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Jumaluskon alkuperä (Finnish)
Uno Harva
377 downloads