Books in Category: Environmental Issues
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Forest Trees and Forest Scenery
G. Frederick Schwarz
395 downloads
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Lectures on popular and scientific subjects
14th earl of James Sinclair Caithness
394 downloads
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Tirol (German)
Max Haushofer
394 downloads
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The Diatomaceæ of Philadelphia and Vicinity
Charles S. Boyer
393 downloads
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The Salton Sea: An account of Harriman's fight with the Colorado River
George Kennan
393 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
393 downloads
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Sanctuary: A Bird Masque
Percy MacKaye
393 downloads
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Noteworthy Mammals from Sinaloa, Mexico
Ticul Alvarez, J. Knox Jones, and M. Raymond Lee
393 downloads
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Coral and Coral Reefs
Thomas Henry Huxley
392 downloads
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Mesa Verde: Junior Ranger Booklet
United States. National Park Service
392 downloads
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Acid Rain and Our Nation's Capital: A Guide to Effects on Buildings and Monuments
E. S. McGee
392 downloads
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Use of tobacco among North American Indians
Ralph Linton
391 downloads
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Report on the Migration of Birds in the Spring and Autumn of 1885. Seventh Report
J. A. Harvie-Brown, John Cordeaux, Richard Manliffe Barrington, Alexander Goodman More, and William Eagle Clarke
391 downloads
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Shenandoah National Park, Virginia
United States. National Park Service
390 downloads
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Rapport sur une mission botanique exécutée en 1884 dans le nord, le sud et l'ouest de la Tunisie (French)
A. Letourneux
389 downloads
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El Campesino Puertorriqueño
(Spanish)
Francisco del Valle Atiles
389 downloads
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De afsluiting en droogmaking der Zuiderzee. Weerlegging van bezwaren.
(Dutch)
A. A. Beekman
388 downloads
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Humpback Whales in Glacier Bay National Monument, Alaska
United States. Marine Mammal Commission
388 downloads
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Olympic National Park, Washington
Gunnar O. Fagerlund
387 downloads
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The swamp was upside down
Murray Leinster
386 downloads
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Het Yellowstone-Park (Dutch)
Hugo de Vries
386 downloads
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Wild Life in New Zealand. Part I. Mammalia.
G. M. Thomson
385 downloads
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Report on the Migration of Birds in the Spring and Autumn of 1882. Fourth Report
J. A. Harvie-Brown, John Cordeaux, Richard Manliffe Barrington, and Alexander Goodman More
385 downloads
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Fish Populations, Following a Drought, in the Neosho and Marais des Cygnes Rivers of Kansas
James E. Deacon
384 downloads
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Descripción Geografica, Histórica y Estadística de Bolivia, Tomo 1. (Spanish)
Alcide Dessalines d' Orbigny
383 downloads