Columbia subject headings:
Harvard subject headings:
Atomism--History--19th century.
Capital--History--19th century.
Essentialism (Philosophy)--History--19th century.
History--Philosophy--History--19th century
Marx, Karl, 1818-1883
Working class--History--19th century.
Princeton subject headings:
Atomism--History--19th century.
Capital--History--19th century.
Essentialism (Philosophy)--History--19th century.
History--Philosophy--History--19th century.
Marx, Karl, 1818-1883.
Working class--History--19th century.