"Natural History." . . . . . . "John Muir : apostle of nature" . "Biography" . "Biography"@en . . "John Muir apostle of nature"@en . . . . . . . . . . . . "Electronic books"@en . "John muir : apostle of nature"@en . "Biography of naturalist John Muir, revealing why he remains a major figure in American environmental history nearly a century after his death, and recognizing his efforts on behalf of conservation and preservation."@en . "Biographies" . . . . "Documenting his efforts on behalf of conservation and preservation, this biography of naturalist John Muir reveals why he remains a major figure in American environmental history nearly a century after his death." . "Conservation of Natural Resources." . .