Two ordinances of 1935 amended the Dangerous Drugs Ordinance of 1926, which had already been amended in 1929. A United Nations survey of 1955 lists them among the texts then in force, together with government notices of 1937, 1938, 1941, 1947 and 1950; it does not say what each changed.[1]
Listed for context. No score change is recorded for Zambia here.
References
Checked. The date and the event were compared with a source that was read.