Treaty series
General Secretariat, Organization of American States
General Secretariat, Organization of American States 1985 Treaty series no.9, rev. 1985
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General Secretariat, Organization of American States 1972 Treaty series 25
General Secretariat, Organization of American States 1961 Rev. ed Treaty series no. 9
Legal Division Department of International Law, Pan American Union , 1985 2nd ed Treaty series 9