Columbia subject headings:
Harvard subject headings:
Coca industry--Bolivia--Congresses.
Coca--Bolivia--Congresses.
Cocaine industry--Bolivia--Congresses.
Cocaine--Bolivia--Congresses.
Drug control--Bolivia--Congresses.
Drug traffic--Bolivia--Congresses.
Political parties--Bolivia--Congresses.
Princeton subject headings:
Coca industry--Bolivia--Congresses.
Cocaine industry--Bolivia--Congresses.
Drug control--Bolivia--Congresses.
Drug traffic--Bolivia--Congresses.
Political parties--Bolivia--Congresses.