Columbia subject headings:
Harvard subject headings:
Human services--Tanzania--Congresses.
Public welfare--Tanzania--Congresses.
Social service--Tanzania--Congresses.
Tanzania--Politics and government--1964---Congresses.
Tanzania--Social conditions--1964---Congresses.
Princeton subject headings:
Human service--Tanzania--Congresses.
Public welfare--Tanzania--Congresses.
Social services--Tanzania--Congresses.
Tanzania--Politics and government--1964---Congresses.
Tanzania--Social conditions--1964---Congresses.