Social conditions History 46 African Americans 37 Economic conditions 19 Race relations 14 Puerto Ricans 11 Ethnic groups 10 more ... Ethnic relations 9 Housing 9 Immigrants 9 Histoire 8 Politics and government 8 Conditions sociales 7 Emigration and immigration 7 Periodicals 7 City planning 6 German Americans 6 Italian Americans 6 Minorities 6 Social life and customs 6 Community life 5 Public welfare 5 Employment 4 Ethnic identity 4 Household employees 4 Population 4 Social service 4 Societies, etc 4 Urban renewal 4 African American women 3 Asian Americans 3 Chinese Americans 3 Citizen participation 3 Civil rights 3 Civilization 3 Employees 3 Ethnicity 3 Émigration et immigration 3 Jews 3 Philadelphia (Pa.) 3 less ...