Columbia subject headings:
Harvard subject headings:
Communism--Periodicals
Engels, Friedrich, 1820-1895--Periodicals.
Marx, Karl, 1818-1883--Periodicals.
Socialism--Periodicals
Princeton subject headings:
Communism--Periodicals.
Engels, Friedrich, 1820-1895--Periodicals.
Marx, Karl, 1818-1883--Periodicals.
Periodicals.
Socialism--Periodicals.