Books in Category: Environmental Issues
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Ideen zu einer Physiognomik der Gewächse (German)
Alexander von Humboldt
549 downloads
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Flowers of the Southwest Deserts
Natt N. Dodge
546 downloads
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Waterfowl Identification Guide
Central Flyway Council
545 downloads
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The Flea
Harold Russell
544 downloads
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The Vivisectors' Directory
544 downloads
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Bird-Lore, March-April 1916
Various
539 downloads
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Reise in die Aequinoctial-Gegenden des neuen Continents. Band 3. (German)
Alexander von Humboldt
538 downloads
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Cornwall
S. Baring-Gould
538 downloads
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Ancient Landscapes of the Grand Canyon Region
Edwin D. McKee
538 downloads
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Coal, and What We Get from It
Raphael Meldola
538 downloads
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A Report on Washington Territory
William Henry Ruffner
535 downloads
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Coral and Coral Reefs
Thomas Henry Huxley
535 downloads
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Appletons' Popular Science Monthly, November 1898
Various
535 downloads
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The Flower-Fields of Alpine Switzerland: An Appreciation and a Plea
G. Flemwell
534 downloads
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Practical Methods of Sewage Disposal for Residences, Hotels and Institutions
Henry N. Ogden and H. Burdett Cleveland
533 downloads
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War Gardens: A Pocket Guide for Home Vegetable Growers
Montague Free
533 downloads
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Northern Nut Growers Association, Report Of The Proceedings At The Tenth Annual Meeting.
533 downloads
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Poisonous Dwellers of the Desert
Natt N. Dodge
533 downloads
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Checking the Waste: A Study in Conservation
Mary Huston Gregory
531 downloads
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Migration of Birds (1979)
Frederick Charles Lincoln and Steven R. Peterson
529 downloads
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Lectures on popular and scientific subjects
14th earl of James Sinclair Caithness
528 downloads
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Animal Sanctuaries in Labrador
William Wood
528 downloads
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The Story of a Piece of Coal: What It Is, Whence It Comes, and Whither It Goes
Edward A. Martin
525 downloads
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Ethnology of the Ungava District, Hudson Bay Territory
Lucien M. Turner
525 downloads
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The Holy Earth
L. H. Bailey
525 downloads