Books in Category: Environmental Issues
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Natural Bridges National Monument (1954)
United States. National Park Service
503 downloads
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A year among the trees : or, the woods and by-ways of New England
Wilson Flagg
502 downloads
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Forest Trees and Forest Scenery
G. Frederick Schwarz
500 downloads
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The National Geographic Magazine, Vol. I., No. 4, October, 1889
Various
499 downloads
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Forestry for Farmers
B. E. Fernow
498 downloads
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Bamboo, Considered as a Paper-making Material
Thomas Routledge
497 downloads
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Draft of a Plan for Beginning Animal Sanctuaries in Labrador
William Wood
497 downloads
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El Campesino Puertorriqueño
(Spanish)
Francisco del Valle Atiles
496 downloads
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The Mammals of Washtenaw County, Michigan
Norman Asa Wood
496 downloads
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Sewage Disposal on the Farm, and Protection of Drinking Water
Theobald Smith
495 downloads
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Dresden und die Sächsische Schweiz (German)
Sophus Ruge
493 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
491 downloads
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Street Trees
Furman Lloyd Mulford
489 downloads
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Report of the Sanitary Committee of the Commissioners of Sewers of the City of London, together with a report of the Medical Officer of Health on the objections raised by the Butchers' Trade Society to the bye-laws proposed for the regulation of slaughter-houses
W. Sedgwick Saunders and City of London . Commissioners of Sewers. Sanitary Committee
489 downloads
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Wild Life in New Zealand. Part I. Mammalia.
G. M. Thomson
489 downloads
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Cumberland Island: Junior Ranger Program Activity Guide for Ages 5-7
United States. National Park Service
489 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
488 downloads
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O Vegetarismo e a Moralidade das raças (Portuguese)
Jaime de Magalhães Lima
488 downloads
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Petrified Forest National Monument, Arizona
Dama Margaret Smith
487 downloads
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Natural History of the Salamander, Aneides hardii
Richard F. Johnston and G. A. Schad
486 downloads
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Water pollution—Wells
Irving A. Watson
485 downloads
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In het Balkanbergland van Bulgarije
(Dutch)
L. de Launay
484 downloads
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Cactus Forest Drive, Saguaro National Monument
Anonymous
484 downloads
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Earthquakes
Kaye M. Shedlock and L. C. Pakiser
484 downloads
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Mensch und Erde: Skizzen von den Wechselbeziehungen zwischen beiden (German)
Alfred Kirchhoff
483 downloads