Columbia subject headings:
Napo (Ecuador : Province)--Economic conditions.
Napo (Ecuador : Province)--Politics and government.
Napo (Ecuador : Province)--Social conditions.
Harvard subject headings:
Napo (Ecuador : Province)--Economic conditions.
Napo (Ecuador : Province)--Politics and government.
Napo (Ecuador : Province)--Social conditions.
Princeton subject headings:
Napo (Ecuador : Province)--Case studies.