Books in Category: Environmental Issues
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The House Fly and How to Suppress It
L. O. Howard and F. C. Bishopp
618 downloads
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Practical Methods of Sewage Disposal for Residences, Hotels and Institutions
Henry N. Ogden and H. Burdett Cleveland
618 downloads
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Wild Animals of Yellowstone National Park
Harold J. Brodrick
618 downloads
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Birds and All Nature, Vol. 4, No. 4, October 1898
Various
617 downloads
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Landesverein Sächsischer Heimatschutz — Mitteilungen Band XII, Heft 1-3 : Monatsschrift für Heimatschutz, Volkskunde und Denkmalpflege (German)
617 downloads
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Burton Island State Park: Guide to the Interpretive Nature Trail and Hiking Trail
Stephen Antil
616 downloads
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A Report upon the Mollusk Fisheries of Massachusetts
Massachusetts. Commissioners on Fisheries and Game and David Lawrence Belding
616 downloads
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Crater Lake National Park, Oregon (1938)
United States. National Park Service
614 downloads
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Weather and Folk Lore of Peterborough and District
Charles Dack
613 downloads
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Geographic Variation in the Pocket Gopher, Thomomys bottae, in Colorado
Phillip M. Youngman
612 downloads
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Ecology of the Opossum on a Natural Area in Northeastern Kansas
Henry S. Fitch and Lewis L. Sandidge
611 downloads
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The Game Fish, of the Northern States and British Provinces
Robert Barnwell Roosevelt
610 downloads
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The Coming Ice Age
C. A. M. Taber
609 downloads
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Birds Illustrated by Color Photography, Vol. 3, No. 4.
Various
609 downloads
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Deserts: Geology and Resources
A. S. Walker
607 downloads
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Agatized Rainbows: A Story of the Petrified Forest
Harold J. Brodrick
606 downloads
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The Flower-Fields of Alpine Switzerland: An Appreciation and a Plea
G. Flemwell
605 downloads
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Sanctuary: A Bird Masque
Percy MacKaye
605 downloads
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Itinerario de Buenos Aires a Cordoba (Spanish)
José Sourryère de Souillac
604 downloads
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Birds and Nature, Vol. 08, No. 4, November 1900
Various
603 downloads
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Some Common Birds Useful to the Farmer (1915 edition)
F. E. L. Beal
603 downloads
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Birds and All Nature, Vol. 4, No. 2, August 1898
Various
602 downloads
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A History of Epidemic Pestilences
Edward Bascome
602 downloads
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Birds and All Nature, Vol. 4, No. 3, September 1898
Various
601 downloads
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Wild Animals of the Rockies
James P. Gilligan
600 downloads