Columbia subject headings:
Nature in literature.
Thoreau, Henry David, 1817-1862. Journal.
Thoreau, Henry David, 1817-1862. Walden.
Harvard subject headings:
Nature in literature.
Thoreau, Henry David, 1817-1862. Journal.
Thoreau, Henry David, 1817-1862. Walden
Princeton subject headings:
Nature in literature.
Thoreau, Henry David, 1817-1862. Journal.
Thoreau, Henry David, 1817-1862. Walden.