Columbia subject headings:
Philosophy of nature--Early works to 1800.
Philosophy--Early works to 1800.
Science--Philosophy--Early works to 1800.
Utopias--Early works to 1800.
Harvard subject headings:
Philosophy of nature--Early works to 1800
Philosophy--Early works to 1800
Science--Philosophy--Early works to 1800.
Utopias--Early works to 1800
Princeton subject headings:
Philosophy of nature--Early works to 1800.
Philosophy--Early works to 1800.
Science--Philosophy--Early works to 1800.
Utopias--Early works to 1800.