Columbia subject headings:
Economic assistance, American--Western Hemisphere.
Humanitarian assistance, American--Western Hemisphere.
Western Hemisphere--Economic integration.
Harvard subject headings:
Economic assistance, American--Western Hemisphere.
Humanitarian assistance, American--Western Hemisphere.
Western Hemisphere--Economic integration.
Princeton subject headings:
Economic assistance, American--Western Hemisphere.
Humanitarian assistance, American--Western Hemisphere.
Western Hemisphere--Economic integration.