Columbia subject headings:
Capitalism.
Labor movement.
Labor--Philosophy.
Marxian school of sociology.
Working class.
Harvard subject headings:
Capitalism
Labor economics
Labor movement
Labor theory of value.
Labor--Philosophy
Marx, Karl, 1818-1883
Marxian economics.
Marxian school of sociology.
Working class
Princeton subject headings:
Capitalism.
Labor movement.
Labor--Philosophy.
Marx, Karl, 1818-1883.
Marxian school of sociology.
Working class.