Columbia subject headings:
Economics.
Marx, Karl, 1818-1883.
Property--Moral and ethical aspects.
Thomas, Aquinas, Saint, 1225?-1274.
Harvard subject headings:
Church and social problems--Catholic Church
Marx, Karl, 1818-1883
Thomas, Aquinas, Saint, 1225?-1274
Wealth.
Princeton subject headings:
Church and social problems--Catholic Church.
Marx, Karl, 1818-1883.
Thomas, Aquinas, Saint, 1225?-1274.
Wealth.