General 518 History 506 Histoire 405 HISTORY 334 SOCIAL SCIENCE 276 POLITICAL SCIENCE 218 State & Local 178 BUSINESS & ECONOMICS 143 BIOGRAPHY & AUTOBIOGRAPHY 129 LITERARY CRITICISM 118 History and criticism 106 Social aspects 100 Social conditions 96 Reference 92 TECHNOLOGY & ENGINEERING 90 Aspect social 89 EDUCATION 88 Histoire et critique 87 Indians of North America 87 Conditions sociales 84 LAW 84 Politics and government 84 Social life and customs 83 PERFORMING ARTS 76 Politique et gouvernement 67 American 66 Historical 66 Mœurs et coutumes 66 Public Policy 64 SCIENCE 64