- Dialectical materialism--History (8)
- Marx, Karl, 1818-1883 (4)
- Hegel, Georg Wilhelm Friedrich, 1770-1831 (2)
- Philosophy, Modern--19th century (2)
- Critical theory--History (1)
- Economics--Methodology--History (1)
- Frankfurt school of sociology--History (1)
- Lukács, György, 1885-1971 (1)
- Science--History (1)
- Smith, Adam, 1723-1790 (1)
- Socialism and religion--Japan--History (1)
- Socialism--Japan--Philosophy--History (1)
- Technology--History (1)
- Weber, Max, 1864-1920 (1)