Columbia subject headings:
Harvard subject headings:
Rural development--Tanzania--Ruvuma Region--History.
Ruvuma Development Association--History.
Ruvuma Region (Tanzania)--History.
Ruvuma Region (Tanzania)--Politics and government.
Ruvuma Region (Tanzania)--Social conditions.
Socialism--Tanzania--Ruvuma Region--History.
Working class--Tanzania--Ruvuma Region--History.
Princeton subject headings:
Ruvuma Region (Tanzania)--Politics and government.
Ruvuma Region (Tanzania)--Social conditions.