Agreement concerning the Suppression of the Manufacture of, Internal Trade in, and Use of, Prepared Opium

No participant list is shown for this treaty. Either the depositary states no signatory or party totals for it, or our reading of the table did not match the totals it does state — and where the two disagree we publish neither. The absence of a table here is a statement about our parse, not a claim that no country has joined this treaty. Consult the United Nations Treaty Collection, which is the authority.