Columbia subject headings:
Ecuador--Environmental conditions.
Ecuador--Public opinion.
Environmental protection--Ecuador--Public opinion.
Environmental protection--Social aspects--Ecuador.
Environmentalism--Ecuador--Public opinion.
Environmentalism--Social aspects--Ecuador.
Indians of South America--Ecuador--Attitudes.
Petroleum industry and trade--Environmental aspects--Ecuador.
Harvard subject headings:
Princeton subject headings:
Ecuador--Environmental conditions.
Ecuador--Public opinion.
Environmental protection--Ecuador--Public opinion.
Environmental protection--Social aspects--Ecuador.
Environmentalism--Ecuador--Public opinion.
Environmentalism--Social aspects--Ecuador.
Indians of South America--Ecuador--Attitudes.
Petroleum industry and trade--Environmental aspects--Ecuador.