Columbia subject headings:
Harrington, James, 1611-1677.
Hobbes, Thomas, 1588-1679.
Levellers.
Locke, John, 1632-1704.
Harvard subject headings:
Harrington, James, 1611-1677.
Hobbes, Thomas, 1588-1679
Levellers.
Locke, John, 1632-1704
Princeton subject headings: