Columbia subject headings:
Harvard subject headings:
Engels, Friedrich, 1820-1895
Korsch, Karl, 1886-1961.
Materialism.
Pannekoek, Anton, 1873-1960. Lenin als Philosoph.
Structuralism.
Princeton subject headings:
Engels, Friedrich, 1820-1895.
Korsch, Karl, 1886-1961.
Materialism.
Pannekoek, Anton, 1873-1960.
Structuralism.