History 21 Communism 18 Dissertations, Academic (Ph.D) 12 Keynes, John Maynard, 1883-1946 12 Marx, Karl, 1818-1883 12 Criticism and interpretation 10 Marxian economics 10 Thesis (Ph.D)-Environmental Science 9 Socialism 7 Philosophy 6 Capitalism 5 Biography 4 Dialectical materialism 4 Keynesian economics 4 Philosophy, Marxist 4 Sociology 4 Anthropology 3 Communists 3 Criminal law 3 Ethics 3 Folklore 3 Historical materialism 3 History and criticism 3 Marxist anthropology 3 Post-communism 3 Religion 3 Thesis (Ph.D)-Environmental science 3 Weber, Max, 1864-1920 3 Aesthetics 2 Alienation (Social psychology) 2