Columbia subject headings:
Harvard subject headings:
Economics--Congresses
Keynes, John Maynard, 1883-1946--Congresses.
Marx, Karl, 1818-1883--Congresses.
Schumpeter, Joseph A., 1883-1950--Congresses.
Princeton subject headings:
Economics--Congresses.
Keynes, John Maynard, 1883-1946--Congresses.
Marx, Karl, 1818-1883--Congresses.
Schumpeter, Joseph Alois, 1885-1950--Congresses.