History 30 Communism 28 Socialism 24 Biography 22 Marxism-Leninism-- Political Ideologies 21 Marxism 20 Lenin 17 Leninism 16 Social Sciences 11 Russia 10 Economics 9 Political Science 9 Political science 9 Soviet Union 8 Imperialism 7 English;politics 6 Marxian economics 6 Politics 6 communism 6 Capitalism 5 Politics and government 5 മലയാളം; ജീവചരിത്രം 5 Biography/Autobiography 4 International relations 4 Karl Marx 4 Malayalam; Biography 4 Malayalam; Communism 4 Malayalam; Communism/Marxism 4 Marxism--Leninism--Political Ideologies 4 Revolutions 4