Urbanization 219 History 120 Quran 101 Urban communities-- Sociology 74 Surface chemistry 73 Dissertations, Academic (Ph.D) 67 Islam 67 quran studies 67 Cities and towns 60 Sociology, Urban 59 Religion 57 City planning 53 Politics and government 49 Social Sciences 47 Rural development 44 Sociology 43 Education 42 Agriculture 41 Population 40 Communication 39 Finance 38 Social conditions 38 Urban 37 Transportation 36 Industries 35 Language and literature 35 Non-governmental organizations 35 Scheduled tribes 35 Tribes 35 Untouchables 35