Columbia subject headings:
Drug control--Mexico.
International relief--South Asia.
Poverty--South Asia.
United States--Foreign relations--Law and legislation.
Harvard subject headings:
Drug control--Mexico
International relief--South Asia.
Poverty--South Asia
United States--Foreign relations--Law and legislation.
Princeton subject headings:
Drug control--Mexico.
International relief--South Asia.
Poverty--South Asia.
United States--Foreign relations--Law and legislation.