Columbia subject headings:
Harvard subject headings:
Bolivia--Commerce--Congresses.
Commercial products--Bolivia.
Exports--Bolivia.
Princeton subject headings:
Andean Area--Commerce--Panama--Congresses.
Andean Area--Commerce--Spain--Congresses.
Panama--Commerce--Andean Area--Congresses.
Panama--Commerce--Spain--Congresses.
Spain--Commerce--Andean Area--Congresses.
Spain--Commerce--Panama--Congresses.