Social conditions 73 History 29 African Americans 20 Economic conditions 9 Puerto Ricans 8 Race relations 8 City planning 6 more ... Housing 5 Immigrants 5 Social life and customs 5 Conditions sociales 4 Ethnic relations 4 Histoire 4 Household employees 4 Periodicals 4 Politics and government 4 Public welfare 4 African American women 3 Citizen participation 3 Community life 3 Emigration and immigration 3 Ethnic identity 3 German Americans 3 Italian Americans 3 Social classes 3 Social service 3 Upper class 3 Charities 2 Community development, Urban 2 Criminal justice, Administration of 2 Ethnicity 2 Government publicity 2 Minorities 2 Noirs américains 2 Philadelphia 2 Philadelphia (Pa.) 2 Political aspects 2 Population 2 Race identity 2 Social aspects 2 less ...