Regulations no. 35 relating to the importation, manufacture, production, compounding, sale, dispensing, and giving away of opium or coca leaves, their salts, derivatives, or preparations thereof under the act of December 17, 1914, as amended by sections 1006 and 1007 of the Revenue act of 1918, and under section 1008 of the said Revenue act of 1918
United States. Internal Revenue Service