History 130 Politics and government 100 Economic conditions 86 Agriculture 81 Islam 77 Forests and forestry 61 Periodicals 59 more ... Economic aspects 54 Social conditions 53 Congresses 42 Research 41 Economic policy 40 Social life and customs 40 Bibliography 37 Biography 35 Fisheries 33 Case studies 28 Education 27 History and criticism 26 Rice 26 Livestock 25 Foreign relations 23 Languages 23 Ethnology 21 Indonesian literature 21 Identification 20 Chinese 18 Indonesia 18 Civilization 17 Islam and politics 17 less ...