Columbia subject headings:
Lauderdale, James Maitland, Earl of, 1759-1839.
Malthus, T. R. (Thomas Robert), 1766-1834.
Ricardo, David, 1772-1823.
Harvard subject headings:
Lauderdale, James Maitland, Earl of, 1759-1839.
Malthus, T. R. (Thomas Robert), 1766-1834.
Ricardo, David, 1772-1823.
Princeton subject headings:
Lauderdale, James Maitland, Earl of, 1759-1839.
Malthus, T. R. (Thomas Robert), 1766-1834.
Ricardo, David, 1772-1823.