History 319 Political parties 186 India 183 Differential equations, Partial 151 Politics and government 133 Differential equations-- Analysis-- Mathematics 119 Particles (Nuclear physics) 108 Mathematics 105 Literature 95 Philosophy 85 Social Sciences 71 Politics 68 Political science 66 Communism 59 Spanish fiction 59 Novel 53 Women 52 Biography 50 Economics 45 Differential equations 41 History and criticism 41 Political Science 40 Nationalism 38 Political parties-India 38 Social conditions 38 Democracy 36 Numerical solutions 36 Mathematical physics 35 Communist parties 33 Religion 32