Columbia subject headings:
Harvard subject headings:
Costa, Angelo, 1901-
Costa, Angelo, 1901-1976.
Economists--Italy--Correspondence.
Italy--Economic conditions.
Italy--Politics and government.
Working class--Italy
Princeton subject headings:
Costa, Angelo, 1901-1976.
Economists--Italy--Correspondence.
Italy--Economic conditions.
Italy--Politics and government.
Labor--Italy.