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Available in Gale Academic OneFile.
Available in Academic Search Complete.
Available in JSTOR Arts & Sciences XV Archive Collection.
Available in Gale Academic OneFile Select.
Available in Gale In Context: Environmental Studies.
Available in Gale General OneFile.
Available in Proquest Periodicals Archive Online Collection 5.
Available in Gale In Context: Science.
Electronic
Journal
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by Thompson, Edgar T. 1900-1989.
Imprint 2010
Available in ProQuest Ebook Central - Academic Complete.Imprint 2010
Electronic
eBook
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by Roland, Charles Pierce, 1918-2022
Imprint 1976
Click here for full text at Project MUSEImprint 1976
eBook
Electronic
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