Columbia subject headings:
Harvard subject headings:
Developing countries--Economic conditions.
Developing countries--Environmental conditions.
Free trade--Health aspects.
Human rights--Health aspects.
Human rights.
Poor--Health and hygiene--Economic aspects.
Public health--Economic aspects.
World health--Economic aspects.
World health.
Princeton subject headings:
Developing countries--Economic conditions.
Developing countries--Environmental conditions.
Free trade--Health aspects.
Human rights--Health aspects.
Poor--Health and hygiene--Economic aspects.
World health--Economic aspects.