History 6,680 Politics and government 5,460 Indians of South America 3,640 Economic conditions 2,812 Social conditions 2,413 Topographic maps 1,741 Political science 1,628 Economic history 1,262 Economic policy 1,242 Women 1,037 Foreign relations 1,032 Social life and customs 1,016 Boundaries 1,013 Law and legislation 987 Political activity 937 Description and travel 818 Education 780 Aymara Indians 752 Economic aspects 716 Agriculture 690 Government policy 636 Government relations 630 Antiquities 629 Social aspects 629 Constitutional law 606 Land tenure 575 Statistics 563 Legal status, laws, etc 560 Political participation 555 Social history 522 Periodicals 507 Congresses 490 Social policy 467 Travel 461 Guerrillas 433 Biography 419 Labor unions 419 Diplomatic relations 415 Histoire 408 Mineral industries 401 Peasants 400 Presidents 395 Manners and customs 391 Democracy 387 Decentralization in government 384 Civilization 383 Missions 380 Commerce 376 Social movements 374 Rural development 367 Indigenous peoples 361 Human rights 359 Civil rights 347 Finance 347 Population 346 Mines and mineral resources 343 Petroleum industry and trade 342 Land reform 337 Political aspects 329 Folklore 308 Rural conditions 300 Sustainable development 297 Miners 296 History and criticism 289 Drug control 288 Politique et gouvernement 277 Elections 268 Religion 267 Economic development 265 Finance, Public 264 Environmental aspects 259 Quechua Indians 258 Women's rights 256 Poverty 249 Political parties 245 Working class 241 Chaco War, 1932-1935 236 Music 232 Folk music 226 Municipal government 221 Taxation 220 Children 213 Sources 210 Documentary films 208 Ethnic identity 208 Coca industry 204 Drug traffic 200 Geology 199 Banks and banking 198 Citizen participation 198 Emigration and immigration 197 Management 193 Community development 191 Constitutional history 188 Ethnology 188 Foreign economic relations 185 Industries 185 Natural resources 184 Public health 183 Religious life and customs 183