Slums Social conditions 50 Poor 43 History 26 Urban poor 23 Social aspects 21 Housing 19 更多 ... Squatter settlements 14 Violence 13 Economic conditions 12 Marginality, Social 10 Urban renewal 10 Drug traffic 9 Housing policy 7 Social life and customs 7 Cities and towns 6 City planning 6 Working class 6 Community development, Urban 5 Government policy 5 Tenement houses 5 Urbanization 5 African Americans 4 City and town life 4 History and criticism 4 Immigrants 4 Inner cities 4 Urban policy 4 American prose literature 3 Boys 3 少 ...