Columbia subject headings:
Drug control--Latin America.
Drugs of abuse--Law and legislation--Ecuador.
Drugs of abuse--Law and legislation--Latin America.
Harvard subject headings:
Drug control
Drugs of abuse--Law and legislation
Drugs of abuse--Law and legislation--Ecuador.
Princeton subject headings:
Bustos Ramírez, Juan, 1935---Anniversaries, etc.
Drug control--Latin America.
Drugs of abuse--Latin America--Criminal provisions.
Human rights--Latin America.
Social control--Government policy--Latin America.