Columbia subject headings:
Conservation of natural resources--Bolivia--Congresses.
Ecology--Bolivia--Congresses.
Environmental protection--Bolivia--Congresses.
Human ecology--Bolivia--Congresses.
Harvard subject headings:
Princeton subject headings:
Conservation of natural resources--Bolivia--Congresses.
Ecology--Bolivia--Congresses.
Environmental protection--Bolivia--Congresses.
Human ecology--Bolivia--Congresses.