Studies and documents regarding the working of the system of import certificates and export authorisations.
League of Nations.Advisory Committee on Traffic in Opium and Other Dangerous Drugs.
Geneva,
1935-39.
Cover title.
"Geneva, November 2nd, 1935."
"Geneva, September 28th, 1939."⁽¹⁾
"Official no.: C.434.M.255.1935.XI [O.C. 1535(g).]"
"Official no.: C.268.M.185.1939.XI [O.C. 1535(m).]"⁽¹⁾