Columbia subject headings:
Afghanistan--Economic conditions.
India--Commerce--United States.
India--Economic conditions.
Sri Lanka--Commerce--United States.
Tibet Autonomous Region (China)--Commerce.
United States--Commerce--India.
United States--Commerce--Sri Lanka.
Harvard subject headings:
Afghanistan--Economic conditions.
India--Commerce--United States.
India--Economic conditions.
Sri Lanka--Commerce--United States.
Tibet Autonomous Region (China)--Commerce.
United States--Commerce--India.
United States--Commerce--Sri Lanka.
Princeton subject headings:
Afghanistan--Economic conditions.
India--Commerce--United States.
India--Economic conditions.
Sri Lanka--Commerce--United States.
Tibet Autonomous Region (China)--Commerce.
United States--Commerce--India.
United States--Commerce--Sri Lanka.