Cameroon acceded to the 1971 Convention on Psychotropic Substances on 5 June 1981, extending its treaty commitments beyond the narcotic drugs of the Single Convention it had ratified in 1962. Accession to the 1972 Protocol amending the Single Convention had come seven years earlier, in 1974.[1]
Listed for context. No score change is recorded for Cameroon here.
References
Checked. The date and the event were compared with a source that was read.