Social service 391 Public welfare 56 Research 28 Congresses 25 Social work education 23 Social policy 21 Volunteer workers in social service 21 History 17 Community organization 16 Charities 15 Social service, Rural 14 Social workers 14 Social problems 11 Finance 10 Social conditions 10 Vocational guidance 10 Directories 9 Social work administration 9 Case studies 7 Community health services 7 Paraprofessionals in social service 7 Social case work 7 Information services 6 Periodicals 6 Public health 6 Social work 6 Welfare state 6 Associations, institutions, etc 5 Bibliography 5 Citizen participation 5