Books in Category: Environmental Issues
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Northern Nut Growers Association Report of the Proceedings at the Twelfth Annual Meeting
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northern whale-fishery
William Scoresby
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Notes on the Mammals of Gogebic and Ontonagon Counties, Michigan, 1920
Lee R. Dice and Harley Bakwel Sherman
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Noteworthy Mammals from Sinaloa, Mexico
Ticul Alvarez, J. Knox Jones, and M. Raymond Lee
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Observations of a Naturalist in the Pacific Between 1896 and 1899, Volume 2
H. B. Guppy
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Observations on the Mississippi Kite in Southwestern Kansas
Henry S. Fitch
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Ocean and Its Wonders
R. M. Ballantyne
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Official Report of the Exploration of the Queen Charlotte Islands for the Government of British Columbia
Newton H. Chittenden
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Ohio Arbor Day 1913: Arbor and Bird Day Manual
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Ohio naturalist, Vol. 1, No. 3, January, 1901
Ohio State University. Biological Club
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Olympic National Park, Washington
Gunnar O. Fagerlund
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One Hundred Years in Yosemite: The Story of a Great Park and Its Friends
Carl Parcher Russell
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On the mode of communication of cholera
John Snow
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Origin of Species by Means of Natural Selection
Charles Darwin
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O Sprawie Glodowej W Galicyi 1866 (Polish)
Karol Langie
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Oudewater en omtrek, Geologisch, Mythologisch en Geschiedkundig Geschetst (Dutch)
Willem Cornelis van Zijll
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Our Atomic World: The Story of Atomic Energy
C. Jackson Craven
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Our Common Land (and Other Short Essays)
Octavia Hill
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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
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Our National Parks
John Muir
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Our Nuclear Future: Facts, Dangers and Opportunities
Edward Teller and Albert L. Latter
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Our Vanishing Wild Life: Its Extermination and Preservation
William T. Hornaday
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Parks for the People
Various
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Past Condition of Organic Nature
Thomas Henry Huxley
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Pere Marquette State Park
Illinois. Department of Conservation
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