Books in Category: Environmental Issues
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The Food Question: Health and Economy
Various
501 downloads
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Beautiful Birds
Edmund Selous
501 downloads
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An Experimental Translocation of the Eastern Timber Wolf
Thomas F. Weise, William Laughlin Robinson, Richard A. Hook, and L. David Mech
500 downloads
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The Rocky Mountain Goat
Madison Grant
498 downloads
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The Geologic Story of Arches National Park
Stanley William Lohman
497 downloads
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Illustrated Catalogue of a Portion of the Collections Made During the Field Season of 1881
William Henry Holmes
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
496 downloads
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Tea Leaves
Francis H. Leggett & Co.
495 downloads
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Aboriginal American Weaving
Mary Lois Kissell
490 downloads
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Saguaro National Monument, Arizona
Napier Shelton and Natt N. Dodge
490 downloads
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Wild Flowers of Zion and Bryce Canyon National Parks and Cedar Breaks National Monument
Carl E. Jepson and Leland F. Allen
489 downloads
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Our national forests : a short popular account of the work of the United States Forest service on the national forests
Richard H. D. Boerker
488 downloads
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House Rats and Mice
David E. Lantz
488 downloads
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The Farm That Won't Wear Out
Cyril G. Hopkins
487 downloads
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Arbor Day Leaves
Nathaniel Hillyer Egleston
486 downloads
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Cape Cod : its natural and cultural history : a guide to Cape Cod National Seashore, Massachusetts
United States. National Park Service. Division of Publications and Robert Finch
486 downloads
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Grand Teton: A Guide to Grand Teton National Park, Wyoming
United States. National Park Service
482 downloads
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Natural History of the Salamander, Aneides hardii
Richard F. Johnston and G. A. Schad
482 downloads
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Food Habits of the Thrushes of the United States
F. E. L. Beal
482 downloads
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The Geologic Story of Yellowstone National Park
William R. Keefer
481 downloads
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Municipal housecleaning : the methods and experiences of American cities in collecting and disposing of their municipal wastes—ashes, rubbish, garbage, manure, sewage, and street refuse
William Parr Capes and Jeanne Daniels Carpenter
481 downloads
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Hygeia, a City of Health
Benjamin Ward Richardson
481 downloads
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The Diatomaceæ of Philadelphia and Vicinity
Charles S. Boyer
481 downloads
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A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, México
William Edward Duellman
480 downloads
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Ecological Observations on the Woodrat, Neotoma floridana
Dennis G. Rainey and Henry S. Fitch
479 downloads