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Karl Marx
Leon Trotsky
Karl And Friedrich Engels Marx
Marx, Karl; Engels, Frederick
Marx, Karl; Fernbach, David (editor)
Karl Marx with Friedrich Engels
Marx, Karl) Berlin, Isaiah (Sir)
Marx, Karl, ed. McLellan
Trotsky, Leon; Marx, Karl
Trotsky. Leon

See also:

Karl Marx
Karl Marx, ed. & translated by Saul K Padover
Marx, Karl, and Trotsky, Leon, and Malamuth, Charles, and Rühle, Otto
Marx, Karl, and Trotsky, Leon, and Rühle, Otto
Marx. Karl