Columbia subject headings:
Philippines--Commerce--United States.
Philippines--Economic conditions--1918-
United States--Commerce--Philippines.
United States--Economic policy--To 1933.
Harvard subject headings:
Philippines--Commerce--United States.
Philippines--Economic conditions--1918-
Philippines--Economic conditions.
United States--Commerce--Philippines.
United States--Economic policy--To 1933.
United States--Economic policy.
Princeton subject headings: