Books in Category: Environmental Issues
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Everglades Wildguide
Jean Craighead George
591 downloads
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Travels into North America, Volume 1 (of 3)
Pehr Kalm
591 downloads
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The Nation's River: A report on the Potomac
United States. Department of the Interior
590 downloads
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One Hundred Years in Yosemite: The Story of a Great Park and Its Friends
Carl Parcher Russell
586 downloads
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The dawn of astronomy
Sir Norman Lockyer
584 downloads
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Wild Animals of North America
Edward William Nelson
582 downloads
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Modern Geography
Marion I. Newbigin
581 downloads
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Bird Guide: Land Birds East of the Rockies, from Parrots to Bluebirds
Chester A. Reed
579 downloads
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Human Origins
S. Laing
574 downloads
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Cuba Past and Present
Richard Davey
573 downloads
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The Story of Man In Yellowstone
Merrill D. Beal
572 downloads
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Cornwall
S. Baring-Gould
571 downloads
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Mammals of the Southwest Mountains and Mesas
George Olin
571 downloads
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The Healthy Life, Vol. V, Nos. 24-28
Various
569 downloads
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Agate Fossil Beds National Monument, Nebraska
United States. National Park Service
568 downloads
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American Big Game in Its Haunts: The Book of the Boone and Crockett Club
564 downloads
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Spadacrene Anglica: The English Spa Fountain
Edmund Deane
564 downloads
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The Natural History of Selborne, Vol. 1
Gilbert White
564 downloads
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Climatic Changes: Their Nature and Causes
Ellsworth Huntington and Stephen Sargent Visher
562 downloads
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The Harvest of the Sea
James Glass Bertram
561 downloads
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The Taleef Shereef; Or, Indian Materia Medica
561 downloads
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A year at the shore
Philip Henry Gosse
560 downloads
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The Natural History of Selborne, Vol. 2
Gilbert White
560 downloads
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Migration of Birds (1950)
Frederick Charles Lincoln
555 downloads
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Histoire d'un ruisseau (French)
Elisée Reclus
554 downloads