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1961. naciones unidas ratifica el convenio único sobre estupefacientes.
the current approach to combatting the trade and consumption of drugs dates back to 1961 when the united nations ratified the only convention on drugs.
c) se incorporaron 59 municipalidades a la administración del impuesto Único sobre inmueble (iusi);
(c) fifty-nine local governments were given responsibility for managing the single property tax (impuesto Único sobre inmueble -- iusi);