Books in Category: Environmental Issues
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Crater Lake National Park, Oregon (1938)
United States. National Park Service
506 downloads
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The Dwelling House
George Vivian Poore
504 downloads
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The Story of the Hills: A Book About Mountains for General Readers.
H. N. Hutchinson
499 downloads
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Food Habits of the Thrushes of the United States
F. E. L. Beal
498 downloads
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Checking the Waste: A Study in Conservation
Mary Huston Gregory
497 downloads
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Report on the lands of the arid region of the United States, with a more detailed account of the lands of Utah
John Wesley Powell, Grove Karl Gilbert, Clarence E. Dutton, A. H. Thompson, and Willis Drummond
492 downloads
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Landesverein Sächsischer Heimatschutz — Mitteilungen Band XIII, Heft 3-4 : Monatsschrift für Heimatschutz, Volkskunde und Denkmalpflege (German)
491 downloads
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The Forests of Mount Rainier National Park
G. F. Allen
489 downloads
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By Canadian Streams
Lawrence J. Burpee
489 downloads
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Ancient Landscapes of the Grand Canyon Region
Edwin D. McKee
489 downloads
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Desert and water gardens of the Red Sea : Being an account of the natives and the shore formations of the coast
Cyril Crossland
489 downloads
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Birds and All Nature, Vol. 5, No. 5, May 1899
Various
488 downloads
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Alaska (Icelandic)
Jón Ólafsson
488 downloads
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Ohio Arbor Day 1913: Arbor and Bird Day Manual
487 downloads
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Bird Day; How to prepare for it
Charles Almanzo Babcock
487 downloads
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The Flower-Fields of Alpine Switzerland: An Appreciation and a Plea
G. Flemwell
486 downloads
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Aboriginal Remains in Verde Valley, Arizona
Cosmos Mindeleff
484 downloads
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Conservation Through Engineering
Franklin K. Lane
482 downloads
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La grande artère de la Chine: le Yangtseu (French)
Joseph Dautremer
479 downloads
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Michigan Trees: A Handbook of the Native and Most Important Introduced Species
Charles Herbert Otis
478 downloads
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The mighty deep : and what we know of it
Agnes Giberne
477 downloads
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Barometer and Weather Guide
477 downloads
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Great Smoky Mountains National Park, North Carolina and Tennessee
United States. National Park Service
476 downloads
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Birds and All Nature, Vol. 6, No. 3, October 1899
Various
475 downloads
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The Diatomaceæ of Philadelphia and Vicinity
Charles S. Boyer
473 downloads