Urbanization Cities and towns 79 City planning 47 Economic conditions 28 History 26 Social conditions 25 Growth 22 Sociology, Urban 18 Population 17 Regional planning 15 Case studies 12 Bibliography 10 Congresses 10 Rural-urban migration 10 Economic aspects 9 Urban policy 9 Housing 8 Metropolitan areas 7 Migration, Internal 7 Urban economics 7 Urban renewal 7 Rural conditions 6 Agriculture 5 Land use, Urban 5 Emigration and immigration 4 Industries 4 Labor supply 4 Politics and government 4 Rural development 4 Social mobility 4